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Based on this research, what are the key findings regarding the isotopic and chemical characteristics of Japanese thermal waters, and how do these findings contribute to understanding the origins and mixing processes of these waters? Furthermore, what background information and concepts are important for interpreting t... | This research paper investigates the hydrogen and oxygen isotopic ratios and major element chemistry of over 140 thermal water systems in Japan. The key findings and results are as follows:
* **Saline Brines (Arima, Takarazuka, Ishibotoke):** These brines exhibit wide ranges of δ¹⁸O and δD values, shifting from mete... | Matsubaya (1973) H and O isotopic ratios and major elemtn chemistry of japan thermal systems.txt
Geochemical Journal, Vol. 7, pp. 123 to 151, 1973
Hydrogen and oxygen isotopic ratios and major element
chemistry of Japanese thermal water systems
OSAMU MATSUBAYA', HITOSHI SAKAI', ISAO KUSACHI2 and
H... |
What are the key findings of this research paper regarding the Kitomyo Schist in the Kurosegawa Belt, including its metamorphic conditions, age, and significance in the context of 'proto-Japan', and what is the background motivating this reappraisal? | This research paper presents a reappraisal of the Kitomyo Schist in the Kurosegawa Belt, Shikoku, Japan, which was previously considered the oldest record of subduction metamorphism in Japan based on outdated K-Ar dating. The key findings and results are:
* **Metamorphic Conditions:** The study confirms that the Kit... | Matsunaga (2021) age of schist in kurosegawa belt.txt
Lithos 380-381(2021)105898 Contents lists available at ScienceDirect Lithos ELSEVIER journal homepage: www.elsevier.com/locate/lithos Research Article Reappraisal of the oldest high-pressure type schist in Japan: New zircon U-Pb age of the Kitomyo Schist of the Kuro... |
Based on this research paper, what are the key findings regarding the crustal structure and origin of the northeast Japan arc, including the background geological context that shaped its development, and the important concepts used to understand its formation? | This research paper focuses on the crustal structure and origin of the northeast Japan arc, presenting a synthesized view of its tectonic development and the opening of the Japan Sea.
**Key Findings and Results:**
* The northeast Japan arc is a typical island arc characterized by a complicated structural style due ... | Minoura (1992) Crustal structure and origin of the northeast Japan arc.txt
The Island Arc (1992) 1, 2-15
Review Article
Crustal structure and origin of the northeast Japan arc
KOJI MINOURA' AND AKIRA HASEGAWA~
'Institute of Geology and Paleontology and 'Observation Center for Prediction of Earthquakes and Volcanic ... |
What are the key findings and results, important concepts and background context of the research in 'Morris 1989 NdSr isotope volcanic rocks SW Japan'? | Based on the research paper 'Morris 1989 NdSr isotope volcanic rocks SW Japan', the key findings and results include Morris 1989 NdSr isotope volcanic rocks SW Japan.txt
Earth and Planetary Science Letters, 92 (1989) 335-346 335
Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands
[21
Nd and Sr i... | Morris 1989 NdSr isotope volcanic rocks SW Japan.txt
Earth and Planetary Science Letters, 92 (1989) 335-346 335
Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands
[21
Nd and Sr isotope systematics of Miocene to Holocene volcanic rocks
from Southwest Japan: volcanism since the opening of the Ja... |
Based on this research paper about the Mori geothermal field, what were the key findings regarding the gas composition of fluid inclusions, what important concepts like fluid inclusion types and the methods used (QMS, microthermometry) are central to the study, and what is the background context concerning the Mori geo... | This research paper investigates the gas composition of fluid inclusions from the Mori geothermal field in southwestern Hokkaido, Japan, to understand the evolution of geothermal fluids from the early stages of geothermal activity to the initial stage of exploitation.
**Key Findings and Results:**
* **Gas Compositi... | Muramatsu (1997) gas composition of fluid inclusins from Moro geothermal reservoir_translated.txt
RESOURCE GEOLOGY, 47(5), 283-291, 1997
Gas Composition of Fluid Inclusions from the Mori
Geothermal Reservoir, Southwestern Hokkaido, Japan
***
Yoichi MURAMATSu*, Ryo Komatsu**, Takayuki SAWAKI* and Munetake SASAKI
***
Abs... |
What are the key findings and results of the study on the greenstones of the Lower Sorachi Group, what important concepts are explained, and what is the background and context that led to this research? | This research paper investigates the petrology of greenstones from the Lower Sorachi Group in the Sorachi-Yezo Belt of central Hokkaido, Japan. The background context is the ongoing debate regarding the origin of these greenstones, with previous studies suggesting origins ranging from mid-ocean ridge basalts (MORB) to ... | Nagahashi (2002) - Petrology of the greenstones of the Lower Sorachi Group in the Sorachi Yezo Belt central.txt
The Island Arc
(2002)
11,
122–141
Blackwell Science, LtdOxford, UK
IARThe Island Arc1038-48712002 Blackwell Science Asia
112June 2002
361
Greenstones of the Lower Sorachi Group
T. Nagahashi and S. M... |
What are the key findings and results of Nakajima et al.'s (2001) seismic imaging study in northeastern Japan, what important concepts are used to interpret these results, and what was the background and motivation for conducting this research? | Nakajima et al. (2001) conducted a seismic imaging study in the central part of northeastern Japan using a dense seismic network deployed between 1997 and 1999. The study aimed to create high-resolution three-dimensional images of P-wave velocity (Vp), S-wave velocity (Vs), and Vp/Vs ratio to understand the crustal str... | Nakajima (2001) seismic imaging of arc magma fluids.txt
Seismic imaging of arc magma and fluids under the
central part of northeastern Japan
Junichi Nakajimaa,, Toru Matsuzawaa, Akira Hasegawaa, Dapeng Zhaob
aResearch Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku Univer... |
Based on this research paper, what are the key findings regarding the 3D velocity structure (Vp, Vs, and Vp/Vs ratios) beneath northeastern Japan and how do these findings relate to arc magmatism and fluid distribution, considering the background and motivation for the study? | This research paper investigates the three-dimensional P-wave velocity (Vp), S-wave velocity (Vs), and Vp/Vs ratio structure beneath northeastern Japan using seismic tomography. The background for this study lies in the active tectonics of the region, where the Pacific plate is subducting beneath the North American/Okh... | Nakajima (2001) Three_dimensional structure of Vp Vs and Vp Vs beneath.txt
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 106, NO. B10, PAGES 21,843-21,857, OCTOBER 10, 2001
Three-dimensional structure of and beneath
northeastern Japan' Implications for arc magmatism and fluids
Junichi Nakajima, Toru Matsuzawa, and Akira H... |
Based on the U-Pb zircon dating of the Nakanogawa Group in the Hidaka Belt, northern Japan, what are the key findings regarding its depositional age and provenance, and how do these findings contribute to our understanding of the Hokkaido Central Belt and the protolith of the Hidaka metamorphic rocks, considering the p... | This research paper focuses on determining the depositional age and provenance of the Nakanogawa Group within the Hidaka Belt of northern Japan using U-Pb zircon dating. The study aims to refine the understanding of the Hokkaido Central Belt's development and the origin of the Hidaka metamorphic rocks.
**Background an... | Nanayama (2017) - U Pb zircon ages of the Nakanogawa Group in the Hidaka Belt northern Japan Implications.txt
RESEARCH ARTICLE
U–Pb zircon ages of the Nakanogawa Group in the Hidaka
Belt, northern Japan: Implications for its provenance and
the protolith of the Hidaka metamorphic rocks
Futoshi Nanayama1,2| Yutaka Taka... |
Based on detrital zircon U-Pb chronology analysis of sedimentary rocks in eastern Hokkaido, what are the key findings regarding the origin and evolution of the Paleo-Kuril arc (PKA), including its tectonic interactions with NE Asia and the establishment of the modern Kuril arc, and what are the important geological con... | This research paper investigates the origin and evolution of the Paleo-Kuril arc (PKA) using detrital zircon U-Pb chronology of sandstones and acidic tuff beds from the Nemuro and Saroma Groups and Yusenkyo Formation in eastern Hokkaido, which are considered forearc or intra-arc basin sediments. The study's key finding... | Nanayama (2022) - Origin and evolution of the Paleo_Kuril arc inferred from detrital zircon U Pb chronology in.txt
RESEARCH ARTICLE
Origin and evolution of the Paleo-Kuril arc inferred from
detrital zircon U –Pb chronology in eastern Hokkaido, NE Asia
Futoshi Nanayama1,2| Toru Yamasaki1| Toshiya Kanamatsu3|
Hideki Iwan... |
Based on the provided research paper, what are the key findings regarding the magnetic stratigraphy of the Japanese Neogene and Quaternary sediments, including the identified time intervals and their characteristics? Furthermore, what key scientific concepts are utilized in this study, and what background and motivatio... | This research paper focuses on the magnetic stratigraphy of Japanese Neogene and Quaternary marine sediments to establish a detailed correlation and chronology, with the aim of understanding the tectonic evolution of the Japanese island arcs. The key findings include:
* **Identification of Three Major Time Intervals... | Niitsuma (1978) magnetic strarigraphy of Japanese Neogene.txt
J. Phys. Earth, 26, Suppl., S 367-S 378, 1978
MAGNETIC STRATIGRAPHY OF THE JAPANESE NEOGENE
AND THE DEVELOPMENT OF THE ISLAND
ARCS OF JAPAN
Nobuaki NIITSUMA
Institute of Geoscience, Shizuoka University, Shizuoka, Japan
(Received June 19, 1978; Revised Septem... |
Based on this research, what are the key findings regarding the Sangun belt, what are the important concepts and definitions used to describe it, and what is the background or motivation that led to this re-evaluation of the belt's structure and age? | This research challenges the long-held view of the Sangun belt as a single, coherent glaucophanitic terrane of Permian to Triassic age. The key finding is that the Sangun belt is actually composed of two distinct geologic units: the older Renge belt and the younger Suo belt, which have different ages and contrasting fo... | Nishimura 1998 Journal Metamorphic Geology - 2004 - NISHIMURA - Geotectonic subdivision and areal extent of the Sangun belt Inner Zone of.txt
J. metamorphic Geol., 1998, 16,129–140
Geotectonic subdivision and areal extent of the Sangun belt, Inner
Zone of Southwest Japan
Y. NISHIMURA
Department of Earth Sciences, Facu... |
Based on the provided text, what are the key findings regarding the Nishisonogi jadeitite, including its geological context, formation, unique characteristics, and the associated metamorphic rocks and processes? Additionally, what are the key concepts and background information that help understand the significance of ... | The research paper reviews the Nishisonogi jadeitite, a unique occurrence among Japanese jadeitites due to its age and formation via metasomatic replacement (R-type). Key findings include:
* **Geological Context:** The Nishisonogi jadeitite is located within the Nishisonogi unit of the Nagasaki Metamorphic Complex i... | Nishiyama (2017) - Jadeitites and associ rocks from serpentinite melange Nishisonogi unit, Nagasaki.txt
Journal of Mineralogical and Petrological Sciences, Volume 112, page 197-216, 2017 REVIEW Jadeitites and associated metasomatic rocks from serpentinite melanges in the Nishisonogi unit, Nagasaki Metamorphic Complex, ... |
What are the key findings and results, important concepts and background context of the research in 'Nohda (1988) asthenospheric injection and back-arc opening NE Japan'? | Based on the research paper 'Nohda (1988) asthenospheric injection and back-arc opening NE Japan', the key findings and results include Nohda (1988) asthenospheric injection and back-arc opening NE Japan.txt
Chemical Geology, 68 (1988) 317-327 317
Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlan... | Nohda (1988) asthenospheric injection and back-arc opening NE Japan.txt
Chemical Geology, 68 (1988) 317-327 317
Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands
[5]
ASTHENOSPHERIC INJECTION AND BACK-ARC OPENING"
ISOTOPIC EVIDENCE FROM NORTHEAST JAPAN
SUSUMU NOHDA 1, YOSHIYUKI TATSUMI 2, YO... |
Based on the study of cleavable olivine in serpentinite mylonites from the Oeyama ophiolite, what are the key findings regarding its formation and characteristics, what important concepts like 'cleavable olivine' and 'parting' are crucial to understanding the research, and what is the background context that motivated ... | This research paper investigates the genesis of 'cleavable olivine,' a type of olivine exhibiting well-developed parting planes resembling cleavage, found in peridotites within the Oeyama ophiolite in SW Japan. The background context is that cleavable olivine has been observed in orogenic belts and seafloor peridotites... | Nozaka (2011) Cleavable olivine in serpentinites from oeyama.txt
36 T. Nozaka and Y . Ito Journal of Mineralogical and Petrological Sciences, Volume 106, page 36 ─50, 2011
doi:10.2465/jmps.100408
T. Nozaka, nozaka@cc.okayama-u.ac.jp Corresponding authorCleavable olivine in serpentinite mylonites from
the Oeyama ophio... |
Based on the research presented in this paper, what are the key findings regarding the metasomatic hydration of the Oeyama forearc peridotites, what are the important concepts and processes involved, and what background context and motivation led to this investigation? | This research paper investigates the metasomatic hydration of the Oeyama forearc peridotites to understand the initial stages of hydration and tectonic processes in unserpentinized peridotites within supra-subduction zones. The background context is that while serpentinization is well-recognized, the early stages of hy... | Nozaka (2014) Metasomatic hydration of the Oeyama forearc peridotites.txt
Lithos 184-187 (2014) 346-360 Contents lists available at ScienceDirect Lithos ELSEVIER Hitokabe Metasomatic hydration of the Oeyama forearc peridotites: rossMark Tectonic implications Toshio Nozaka * Department of Earth Sciences Okayama Universi... |
What are the key findings and results, important concepts and background context of the research in 'Nozaka (2018) - Compositional variation of olivine related to high-temperature serpentinization of peridotites'? | Based on the research paper 'Nozaka (2018) - Compositional variation of olivine related to high-temperature serpentinization of peridotites', the key findings and results include Nozaka (2018) - Compositional variation of olivine related to high-temperature serpentinization of peridotites.txt
Journal of Mineralogical a... | Nozaka (2018) - Compositional variation of olivine related to high-temperature serpentinization of peridotites.txt
Journal of Mineralogical and Petrological Sciences, Volume 113, page 219-231, 2018 Compositional variation of olivine related to high-temperature serpentinization of peridotites: Evidence from the Oeyama o... |
Based on this research paper, what are the key findings regarding the petrography of primary peridotites from the Ohsa-yama area, Okayama Prefecture, and how does this relate to the broader geological context of the Sangun metamorphic belt? Specifically, address the classification of the Ohsa-yama ultramafic body, its ... | The research paper focuses on the petrography of ultramafic rocks from the Ohsa-yama area in Okayama Prefecture, aiming to clarify their primary petrologic nature within the context of the Sangun metamorphic belt. The key findings are that the primary ultramafic rocks of the Ohsa-yama body consist predominantly of duni... | Nozaka and Shibata (1994) - Petrography of primary peridotites from the Ohsa-yama area, Okayama Prefecture.txt
OKAYAMA UNIVERSITY Earth Science Report, Vol. 1, No. 1, 1-8, (1994) Petrography of primary peridotites from the Ohsa-yama area, Okayama Prefecture Toshio NozAKA and Tsugio SHIBATA Department of Earth Sciences,... |
Based on this research, what were the key findings regarding the origin of the magnetic lineation on Kyushu Island, Japan, specifically focusing on the linear anomaly near the Futagawa fault within the Aso caldera? Furthermore, what important concepts and background context related to island arc tectonics, magnetic ano... | This research paper investigates the origin of a specific magnetic lineation ("B" in Fig. 1(a)) on Kyushu Island, Japan, near the Futagawa fault within the Aso caldera. The background context is that linear magnetic anomalies are observed in and around the Japanese Islands, potentially linked to island arc tectonics. W... | Ocubo 1997Island Arc - December 1997 - Okubo - Origin of a magnetic lineation on Kyushu Island Japan.txt
The Zsland Arc (1997) 6, 386495
Research Article
Origin of a magnetic lineation on Kyushu Island, Japan
YASUKUNI OKUBO,~ HIROSHI KANAYA,~ AKITSURA SHIBUYA~ AND KIMIO OKUMURA~
lGeologica1 Survey of Japan, 1-1-3 ... |
Based on the detrital zircon analysis from the Maizuru Belt, what are the key findings and results regarding the tectonic evolution of Japan during the late Paleozoic to early Mesozoic, what key concepts and techniques were employed, and what background context motivated this research? | This research paper investigates the late Paleozoic to early Mesozoic tectonic evolution of Japan, focusing on the collision between proto-Japan and continental blocks like the Sino-Korean Block. The motivation stems from the ongoing debate and lack of detailed geological information regarding the relationship between ... | Ohkawa (2022) tectonic evolution of japand based on Maizuru belt.txt
Journal of Asian Earth Sciences 237 (2022)105349 Contents lists available at ScienceDirect Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes Late Paleozoic to early Mesozoic tectonic evolution of Japan based on ... |
Based on detrital zircon geochronology and morphology analyses, what are the key findings regarding the Permian tectonic evolution of proto-Japan and East Asia, including the provenance and depositional environments of Permian sandstones in Japan, and what is the background context that motivated this research? | This research paper investigates the Permian tectonic evolution of proto-Japan and East Asia using detrital zircon geochronology and crystal morphology analysis of Permian sandstones in Japan. The background context is the unclear cause of Late Paleozoic collisional orogenesis in the region due to the scarcity of geolo... | Ohkawa 2024 permian tectonics zircon geochronology.txt
Gondwana Research 133 (2024) 216-238 Contents lists available at ScienceDirect URUMISNO Gondwana Research ELSEVIER journal homepage: www.elsevier.com/locate/gr Permian tectonic evolution of the proto-Japan and East Asia: Insights from detrital zircon geochronology ... |
Based on the research presented, what are the key findings regarding the shifting of volcanic fronts in the Northeast Japan arc during the Early to Late Miocene, what important concepts like 'counter-clockwise rotation' and 'subduction dip angle' are discussed in relation to these shifts, and what is the background con... | This research paper focuses on the shifting of volcanic fronts in the Northeast (NE) Japan arc during the Early to Late Miocene. The key findings reveal the existence of three distinct volcanic fronts with varying temporal and spatial distributions: (1) a 22-25 Ma front (Matsumae-Shizukuishi-Shiogama line) that oblique... | Ohki (1993) Shifting of the volcanic fronts during Early to Late Miocene in the Northeast Japan arc.txt
The Island Arc (1993) 2,87-93
Research Article
Shifting of the volcanic fronts during Early to Late Miocene in the Northeast
Japan arc
JUN'ICHI OHKI, NAOKI WATANABE, KENJI SHUTO' AND TETSUMARU ITAYA3
'Graduate S... |
Considering the context of assessing deep geological repositories in Japan, what are the key findings of this study regarding the feasibility of groundwater dating using Iodine-129, including any discrepancies with other dating methods, and how does the study propose to address the challenges identified, particularly c... | This study investigates the feasibility of using Iodine-129 (129I) for groundwater dating in the context of selecting suitable sites for deep geological repositories in Japan. The key findings reveal that 129I dating results do not coincide with other groundwater dating methods (using 81Kr and 4He). The research sugges... | Ohta 2024 129I groundwater Japan.txt
www.nature.com/scientificreports scientific reports OPEN Feasibility o aroundwater dating calib both 81Kr and *He for the assessment of deep geological repositories in Japan 8 t'sn7 ue!1-buauz's'sbuey u!w ong ''sbue!r !m'Temebaseh ewnye1 'z'texyo oyowol Yasunori Mahara5 lodine-129,... |
Based on this research paper, what are the key findings and results regarding the feasibility of 129I groundwater dating in Japanese deep geological repositories, and what background context and important concepts, such as other dating methods used for calibration, are essential to understanding these findings? | This research paper investigates the feasibility of using 129I groundwater dating, calibrated by both 81Kr and 4He dating methods, for assessing deep geological repositories in Japan. The background context is the need for reliable methods to determine groundwater age in these repositories, which is crucial for evaluat... | Ohta I129 sup41598_2024_66250_MOESM1_ESM.txt
Supplementary Information
Feasibility of 129I groundwater dating calibrated by both 81Kr and 4He for the assessment of deep geological repositories in Japan
Tomoko Ohta1,2,*, Takuma Hasegawa1, Wei Jiang3,4, Guo Min Yang3,4, Zheng -Tian Lu3,4, Yasunori Mahara5
1. Civil Engine... |
Based on the geochemical study of thermal waters in the Green Tuff region of the Hokuriku district, central Japan, what are the key findings and results regarding the formation processes of these waters, including the role of water-rock interaction, mantle-derived components, and deep-seated CO2? How do these findings ... | The research paper investigates the formation processes of thermal waters in the Green Tuff region of the Hokuriku district, central Japan, by analyzing the chemical and isotopic compositions of water and dissolved gases. The key findings are as follows:
* **Key Findings and Results:**
* Two types of thermal w... | Ohwada (2007) formation processes of thermal waters in Green Tuff.txt
Availableonline atwww.sciencedirect.com ScienceDirect Journal of volcanology and geothermal research ELSEVIER Journal of Volcanology and Geothermal Research 168 (2007) 55 -67 www.elsevier.com/locate/jvolgeores Formation processes of thermal waters ... |
Based on the provided text, what are the key findings regarding the geology and fluid chemistry of the Fushime geothermal field, what are the important concepts discussed, and what is the background and context that led to this research? | The research paper focuses on the geology and fluid chemistry of the Fushime geothermal field in Kyushu, Japan.
**Key Findings and Results:**
* The main reservoir is located within a fractured zone around a dacite intrusion in the center of the field, with high permeability zones associated with fault zones, includ... | Okada (2000) geology and fluid chemistry of fushime geothermal.txt
Geology and fluid chemistry of the Fushime
geothermal field, Kyushu, Japan
Hiroaki Okadaa,*, Yoshio Yasudaa, Masahiko Yagib,
Kunio Kaia
aJapan Petroleum Exploration Co., Ltd, 2-2-20 Higashi-Shinagawa, Shinagawa-ku,
Tokyo, 140-0002, Japan
bJapan Petroleum ... |
This research paper presents a magnetic model of the subduction zone in the northeast Japan Arc. Considering this, what are the key findings regarding the magnetic structure of the forearc region, including the estimated depths of magnetic boundaries and the behavior of marine magnetic anomalies? What important concept... | This research paper focuses on developing a magnetic model of the subduction zone in the northeast Japan Arc, specifically examining the forearc region. The key findings and results are as follows:
* **Magnetic Layer Depths:** The research estimates that the magnetic base lies at approximately 20 km depth, while the... | Okubo (1991) magnetic model of the subduction zone in NE Japan Arc.txt
Tectonophysics, 192 (1991) 103-115 103 Elsevier Science Publishers B.V. Amsterdam Magnetic model of the subduction zone in the northeast Japan Arc Yasukuni Okubo a, Masahiko Makino ? and Sigeru Kasuga b GeotogicalSurvey ofJapan,1-1-3 Higashi Tsukubu... |
Based on the research presented in Okubo et al. (1994), what were the key findings regarding magnetic anomalies in Japan and adjoining areas, what important concepts were used to interpret these anomalies, and what was the motivation behind creating the magnetic anomaly map? | The research paper by Okubo et al. (1994) focuses on creating and interpreting a magnetic anomaly map of Japan and its surrounding regions.
**Key Findings and Results:** The most significant findings involved identifying and analyzing linear magnetic features. Two prominent types of lineations were discovered: (1) Li... | Okubo et al. 1994 Magnetic anomalies of Japan and Adjoining Areas.txt
J. Geomag. Geoelectr., 46,411-421, 1994
Magnetic Anomalies of Japan and Adjoining Areas
Yasukuni OKUBO1, Masahiko MAKINOI, Sigeru KASUGA2, Nobuhiro ISEZAKI3, Toshi... |
Based on the research presented, what are the key findings regarding the subsurface structure of the Kitakami plutons, and how were petrophysical and geophysical data (specifically magnetic and gravity data) integrated to arrive at these conclusions? Furthermore, what is the geological context of the Kitakami plutons w... | The research paper focuses on using petrophysical and geophysical data to constrain the subsurface structure of the Kitakami plutons in northeast Japan. The key findings include:
* **Himekami Pluton:** Apparent magnetization intensity mapping revealed zonation within the sub-plutons. 3-D magnetic modeling estimated ... | Okuma & Kanaya 2005 Utility of petrophysical and geophysical data to constrain the subsurface structure the Kitakmai plutons, northeast Japan.txt
Earth Planets Space,57,727-741,2005 Utility of petrophysical and geophysical data to constrain the subsurface structure of the Kitakami plutons, northeast Japan Shigeo Okuma ... |
Based on this research, what are the key findings regarding the subsurface structure of the Akita-Yakeyama volcano and the Sengan Geothermal Area, how were magnetic analyses used to determine these findings, and what background information about the geothermal area and previous research motivated this study? | This research paper investigates the subsurface structure of Akita-Yakeyama volcano and the surrounding Sengan Geothermal Area in northeast Japan using magnetic analyses. The key findings include:
* **Magnetization Mapping:** Areas with high magnetization generally correspond to volcanic rocks with normal magnetizat... | Okuma (1998) magnetic constraints on subsurface NE japan.txt
Earth Planets Space, 50, 153–163, 1998
153Copy right © The Society of Geomagnetism and Earth, Planetary and Space Sciences
(SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan;
The Geodetic Society of Japan; The Japanese Society... |
This research investigates potential geochemical precursors to earthquakes. Considering the background context of earthquake prediction research, the key concepts involved, and the specific findings related to the Tottori earthquake, what were the most important findings and results of this study concerning groundwater... | This research paper investigates a potential geochemical precursor to the 2016 Tottori earthquake (M6.6) in Southwest Japan, focusing on anomalies in groundwater oxygen isotope ratios. The background is rooted in the broader field of earthquake prediction research, where hydro-geochemical precursors, such as anomalies ... | Onda GW O isotopes Mg Totori earthquake SW Japan.txt
ww.nature.com/scientificreport SCIENTIFIC REPORTS OPEN Groundwater oxygen isotope anomaly before the M6.6 Tottori earthguakein Southwest Japan Received: 13 December 2017 Satoki Onda, Yuji Sano, Naoto Takahata, Takanori Kagoshimal, Toshihiro Miyajima, Accepted: 8 Marc... |
Based on the provided text, what were the key findings regarding groundwater oxygen isotope anomalies before the M6.6 Tottori earthquake, what are the key concepts like δ18O, δD, LMWL, and how does the data from Hakusan Meisui site fit into the broader context of earthquake prediction research in Southwest Japan? | This research investigates groundwater oxygen isotope anomalies before the M6.6 Tottori earthquake in Southwest Japan. The key findings include: 1) An observed relationship between δ18O and δD values of groundwater samples at the Hakusan Meisui site during a 'normal' or ordinary period. This relationship is compared ag... | Onda Sup 41598_2018_23303_MOESM1_ESM.txt
1 Supplementary Information Groundwater oxygen isotope anomaly before the M6.6 Tottori earthquake in Southwest Japan Satoki Onda1, Yuji Sano1*, Naoto Takahata1, Takanori Kagoshima1, Toshihiro Miyajima1, Tomo Shibata2, Daniele L. Pinti3, Tefang Lan4, Nak Kyu Kim5, Minoru Kusak... |
Based on the provided text, what are the key findings and results regarding the formation and emplacement of the Yakuno ophiolite and its relationship to the Maizuru Group? Explain the important concepts such as accretionary prism, ophiolite metamorphism, and ridge subduction, and detail the background context and moti... | The research paper by Osozawa et al. (2004) investigates the formation of the Yakuno ophiolite and its association with the Maizuru Group in Japan. The **key findings and results** indicate that the Yakuno ophiolite, along with the Maizuru Group, represents an accretionary prism formed during the Permian period. The pa... | Osozawa (2004) - formation of Yakuno ophiolite.txt
Available online at www.sciencedirect.com TECTONOPHYSICS SCIENCI DIRECT ELSEVIER Tectonophysics 393 (2004) 197-219 www.elsevier.com/locate/tecto Formation of the Yakuno ophiolite; accretionary subduction under medium-pressure-type metamorphic conditions Soichi Osozawa*... |
Based on this research, what are the key findings regarding the origin and evolution of the Kitakami adakitic plutons, including their trace elemental and isotopic compositions, U-Pb ages, and how does this relate to the broader context of ridge subduction and the tectonic history of the region? | The research paper presents key findings about the origin and evolution of Early Cretaceous Kitakami granitic plutons in northeast Japan, suggesting they include rocks of adakitic affinity derived from partial melting of an eclogitic slab. The study utilizes major, trace element, Sr-Nd-Hf isotopic, and U-Pb geochronolo... | Osozawa et al. 2019 Trace elemental and Sr-Nd-Hf isotopic compositions, and U-Pb ages for the Kitakami adakitic plutons.txt
Journal of Asian Earth Sciences 184 (2019) 103968 Contents lists available at ScienceDirect Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes Trace elementa... |
This study investigates the chronology of serpentinization in the Oeyama ophiolite. Considering the background and context of this research, what are the key findings and results regarding the timing of serpentinization, the paleomagnetic evidence supporting these findings, and the important concepts related to serpent... | This research paper investigates the timing of serpentinization in the Oeyama ophiolite of Southwest Japan using paleomagnetic methods. The background and context stem from the difficulty in directly dating serpentinization due to the lack of suitable minerals for isotopic dating. Serpentinization, the alteration of ma... | Otofuji (2021) chronology of serpentinization oeyama ophiolite.txt
Earth and Planetary Science Letters 554 (2021) 116656 Contents lists available at ScienceDirect EARTH Earth and Planetary Science Letters ELSEVIER www.elsevier.com/locate/epsl Chronology of serpentinization: Paleomagnetic evidence for 20 Ma serpentiniza... |
Based on the research paper, what are the key findings regarding the Miyamori ultramafic complex, what important geological concepts are presented in the context of this complex, and what is the background motivation for studying it? | The research paper focuses on the geology of the Miyamori ultramafic complex in the Kitakami Mountains, Northeast Japan.
**Key Findings and Results:**
* The Miyamori ultramafic complex is a thin thrust sheet composed of two distinct members: a tectonite member and a cumulate member. The tectonite member primarily c... | Ozawa 1984 Geology of the Miyamori Ultramfic Complex in the Kitakami Mountains, Northeast Japan_translated.txt
JOURNAL OF THE GEOLOGICAL SOCIETY OF JAPAN, Vol. 90, No. 10, p. 697-716, October 1984
GEOLOGY OF THE MIYAMORI ULTRAMAFIC COMPLEX
IN THE KITAKAMI MOUNTAINS, NORTHEAST JAPAN
KAZUHITO OZAWA*
Abstract The Miyamori... |
Based on the detrital zircon U-Pb and Hf-isotope data from forearc units in northern Honshu, Japan, spanning from the Silurian to the present, what are the key findings regarding crustal evolution, tectonic processes, and magmatic activity in this long-lived subduction system? Explain the background context of studying... | This study, using detrital zircon U-Pb and Hf-isotope data from forearc sediments in northern Honshu, Japan, aims to understand the crustal evolution of the Japanese arc from the Silurian to the present day. The research is motivated by the understanding that forearc basins preserve a geologic record closely tied to ar... | Pastor-Galan et al. 2021 Evidence for crustal removal, tectonic erosion and flare-ups from the Japanese evolving forearc sediment provenance.txt
Earth and Planetary Science Letters 564 (2021) 116893 Contents lists available at ScienceDirect HLAVS Earth and Planetary Science Letters ELSEVIER www.elsevier.com/locate/epsl... |
Summarize the key findings and results presented in this paper concerning the geophysical and geological data of the Japan Arc, including the background context of the Upper Mantle Project and its motivation for this summary. What are the key concepts and terms discussed, such as the Fossa Magna, orogenic belts, K-Ar d... | This paper, a contribution to the Upper Mantle Project (UMP), summarizes up-to-date geophysical and geological data concerning the Japan Arc. The motivation stems from the Japanese National Committee for the UMP's desire to present a progress report at the UMC meeting, and Rikitake's commission to provide a summary rev... | Rikitake (1968) - Geophysical and geological data in and around Japan Arc.txt
Geophysical and geological data in and around the Japan Arc1
T. RIKITAKE, S. MIYAMURA, I. TSUBOKAWA, S. MURAUCHI, S. UYEDA, H. KUNO, AND M. GORAI
Science Council of Japan, Ueno Park, Tokyo, Japan
Received February 23, 1968
Accepted for pu... |
Based on this research paper about the Oshima Belt in SW Hokkaido, what are the key findings regarding the whole-rock geochemistry of sandstones and mudrocks, and how do these findings relate to the background context of the Oshima Belt's formation and its potential sediment sources? Include a discussion of important c... | This research paper presents whole-rock X-ray fluorescence analyses of 82 turbidite sandstones and mudrocks from the Oshima Belt in the Oshima Peninsula of SW Hokkaido. The Oshima Belt is identified as a Jurassic accretionary complex, part of an arc-trench system along the margin of the Asian continent, broadly equival... | Roser 2003 whole rock analysis Oshibelt SW Hokkaido_translated.txt
Shimane University Research Report on Earth Resources and Environmental Studies Pages 22,93-105 (December 2003)
Geoscience Rept. Shimane Univ., 22, p.93~105 (2003)
Article
Whole-rock analyses of sandstones and mudrocks from the Oshima Belt,
Oshima Penin... |
Based on the research paper, what are the key findings and results regarding the Obama geothermal field (OGF) in southwestern Japan, including the important concepts and background context that led to this research? | The research paper by Saibi and Ehara (2010) investigates the temperature and chemical changes in the fluids of the Obama geothermal field (OGF) in southwestern Japan, focusing on the period between 1936 and 2005.
**Background and Context:** The OGF is situated on the Shimabara Peninsula, within the Beppu-Shimabara g... | Saibi (2010) Temperature and chemical changes in the fluids of the Obama geothermal field.txt
Geothermics 39 (2010) 228-241 Contents lists available at ScienceDirect Geothermics ELSEVIER journalhomepage:www.elsevier.com/locate/geothermics Temperature and chemical changes in the fluids of the Obama geothermal field (SW ... |
Based on Saito's 1968 paper on the geology of the Younger Paleozoic system of the southern Kitakami Massif, Iwate Prefecture, Japan, what were the key findings and results regarding the lithostratigraphy, chronostratigraphy, and geostructure of the Carboniferous and Permian terrain? How did these findings contribute to... | Saito's 1968 paper presents a detailed study of the Carboniferous and Permian terrain in the southern Kitakami Massif, Iwate Prefecture, Japan. The key findings and results encompass lithostratigraphical, chronostratigraphical, and geostructural analyses aimed at clarifying problems related to lithofacies, biofacies, s... | Saito (1968) - Geology of the younger Paleozoic system of the southern Kitakami Massif, Iwate Prefecture, Japan.txt
Sci. Rep. Tohoku Univ., 2nd ser. (Geol.), v. 40, n. 2, p. 79-139,
24 figs., 4 tabs., pls. 18, 19, November 30, 1968
Geology of the Younger Paleozoic System of the Southern
Kitakami Massif, Iwate Prefec... |
What are the key findings and results, important concepts and background context of the research in 'Sakai (1974) isotopic geochemistry of the thermal waters of Japand'? | Based on the research paper 'Sakai (1974) isotopic geochemistry of the thermal waters of Japand', the key findings and results include Sakai (1974) isotopic geochemistry of the thermal waters of Japand.txt
Economic Geology
Vol. 69, 1974, pp. 974-991
Isotopic Geochemistry of the Thermal Waters of Japan
and its Bearin... | Sakai (1974) isotopic geochemistry of the thermal waters of Japand.txt
Economic Geology
Vol. 69, 1974, pp. 974-991
Isotopic Geochemistry of the Thermal Waters of Japan
and its Bearing on the Kuroko Ore Solutions
HITOSHI SAKAI AND OSAMU MATSUBAYA
Abstract
Thermal water systems at ocean coasts are mixtures of hydro... |
Based on the research presented in Sakai et al. (2019) regarding the Tokoro Belt in NE Hokkaido, Japan, what are the key findings and results concerning its geological composition and origin, and how does this relate to the larger context of accretionary prism formation and seamount subduction/accretion, including rele... | The Sakai et al. (2019) paper presents key findings about the Tokoro Belt in NE Hokkaido, Japan, revealing it to be an exhumed Jurassic-Early Cretaceous seamount accreted into a Late Cretaceous accretionary prism. The research highlights that the Tokoro Belt is distinct from other Late Cretaceous accretionary complexes... | Sakai et al., (2019) - Tokoro Belt (NE Hokkaido) an exhumed Jurassic Early Cretaceous seamount.txt
Geological Magazine Tokoro Belt (NE Hokkaido): an exhumed, Jurassic - Early Cretaceous seamount in the www.cambridge.org/geo Late Cretaceous accretionary prism of northern Japan Original Article Shunta Sakail* Naoto Hira... |
Based on the research paper, what are the key findings and results regarding the origin of natural gases dissolved in brines from gas fields in southwest Japan, what important concepts and definitions are used to understand these origins, and what background context motivated this research? | This research paper investigates the origin of natural gases dissolved in brines from gas fields in southwest Japan, specifically in Miyazaki and Shizuoka prefectures, motivated by previous studies suggesting that most natural gases in Japan are of microbial origin (methane produced via carbonate reduction). However, s... | SAKATA (2012) Geochemistry and origin of natural gases dissolved in brines from gas fields in southwe.txt
Geochemistry and origin of natural gases dissolved in
brines from gas fields in southwest Japan
S. SAKATA1,T .M A E K A W A1,S .I G A R I1AND Y. SANO2
1Institute for Geo-Resources and Environment, National Institute... |
What are the key findings and results regarding the geochemistry of Quaternary volcanic rocks in the Northeast Japan arc, including the influence of source composition, degree of partial melting, and the role of subduction processes? Also, what are the important scientific concepts, terms, and definitions used in the p... | This research paper investigates the geochemistry of Quaternary volcanic rocks from 17 volcanic centers across the Northeast Japan arc, aiming to understand the processes controlling the chemical composition of arc magmas. The study presents major and trace element data for lavas ranging from basalt to dacite, represen... | Sakuyama (1986) geochemistry of volcanic rocks of northeast japan arc.txt
Journal of Volcanology and Geothermal Research, 29 (1986) 413--450 413
Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands
GEOCHEMISTRY OF THE QUATERNARY VOLCANIC ROCKS OF THE
NORTHEAST JAPAN ARC
M. SAKUYAMA* and R.W. NE... |
Based on the research paper, what were the key findings regarding the depositional setting of the Akiyoshi oceanic rock assemblage, including the important concepts and the background context that motivated this study? | The research paper focuses on reconstructing the paleogeographic setting of the Akiyoshi terrane in southwest Japan, which is composed of Permian-Carboniferous oceanic rocks, including greenstone, limestone, and chert. The study was motivated by the need to understand the depositional environment of this rock assemblag... | Sano (1988) paleogeographic reconstruction of accreted oceanic rocks, Akiyoshi.txt
Paleogeographic reconstruction of accreted oceanic rocks,
Akiyoshi, southwest Japan
Hiroyoshi Sano, Kametoshi Kanmera
Department of Geology, Kyushu University, Fukuoka 812, Japan
ABSTRACT
The depositiona] setting of... |
Based on this research, what are the key geochemical findings regarding Carboniferous greenstones in the Inner Zone of Southwest Japan, what important concepts are used to explain these findings, and what geological background and context motivated this study? | This research focuses on the geochemical characteristics of Carboniferous greenstones found within Permian and Jurassic accretionary complexes (Akiyoshi and Tamba belts, respectively) in the Inner Zone of Southwest Japan. The key findings are:
* **Geochemical Similarity to Oceanic Islands:** The greenstones, remnant... | Sano (2000) Geochemical characteristics of Carboniferous greenstones in the Inner Zone of Southwest.txt
Thematic Article
Geochemical characteristics of Carboniferous greenstones in the
Inner Zone of Southwest Japan
SAKAE SANO,1YASUTAKA HAYASAKA2AND KOICHI TAZAKI3
1Geoscience Laboratory, Faculty of Education, Ehime Uni... |
What are the key findings and results of this research on groundwater helium anomalies related to the 2016 Kumamoto earthquake, and how do these findings relate to the background context of earthquake prediction and the concept of strain gauges? | This research paper investigates groundwater helium anomalies associated with the 2016 Kumamoto earthquake in Southwest Japan. The key findings are that significant changes in helium isotope ratios were observed in deep groundwater samples collected soon after the earthquake. These changes are quantitatively coupled wi... | Sano 2016 Groundwater He anomally SW japansrep37939.txt
vww.nature.com/scientificreport SCIENTIFIC REPORTS OPEN Groundwater helium anomaly reflects strain change during ithe 2016 Kumamoto earthquake in Received: 19 September 2016 Southwest Japan Accepted: 01 November 2016 Published: 29 November 2016 Dapeng Zhao* Geoche... |
Based on this research, what were the key findings regarding groundwater helium anomalies in relation to the 2016 Kumamoto earthquake, and how do these findings connect to the concepts of strain change, helium isotopes, and the geological context of the Kumamoto region? | This research investigated groundwater helium anomalies in relation to the 2016 Kumamoto earthquake in Southwest Japan. The key finding is that the 4He/20Ne and 3He/4He ratios of deep groundwater changed significantly before and after the earthquake, reflecting strain changes in the region. Specifically, the study foun... | Sano Sup41598_2016_BFsrep37939_MOESM1_ESM.txt
Supplementary Information Groundwater helium anomaly reflects strain change during the 2016 Kumamoto earthquake in Southwest Japan Yuji Sano1*, Naoto Takahata1, Takanori Kagoshima1, Tomo Shibata2, Testuji Onoue3, Dapeng Zhao4 1. Atmosphere and Ocean Research Institu... |
Based on the provided research, what are the key findings regarding the geochemical characteristics of hot spring waters in Toyama Prefecture, what important concepts and methods were used to arrive at these findings, and what was the background and motivation for conducting this research? | The research paper focuses on the geochemical evaluation of geothermal resources in Toyama Prefecture, Japan, analyzing 35 hot spring water samples to understand their chemical and isotopic characteristics. The key findings include the classification of hot spring waters into two groups based on chloride (Cl-) concentr... | Sasaki (2021) geochemical evaluation of geothermal resources in Toyama prefecture.txt
Geothermics 93 (2021) 102071 Contents lists available at ScienceDirect GEOTHERMICS Geothermics ELSEVIER journalhomepage:ww Geochemical evaluation of geothermal resources in Toyama Prefecture, Japan, based on the chemical and isotopic ... |
What are the key findings and results, important concepts and background context of the research in 'Sato (2014) ages from blueschist and prehnite-pumpellyite in Kurosegawa belt'? | Based on the research paper 'Sato (2014) ages from blueschist and prehnite-pumpellyite in Kurosegawa belt', the key findings and results include Sato (2014) ages from blueschist and prehnite-pumpellyite in Kurosegawa belt.txt
Journal of Mineralogical and Petrological Sciences, Volume 109, page 258-270, 2014 White mica ... | Sato (2014) ages from blueschist and prehnite-pumpellyite in Kurosegawa belt.txt
Journal of Mineralogical and Petrological Sciences, Volume 109, page 258-270, 2014 White mica K-Ar ages from lawsonite-blueschist facies Hakoishi sub-unit and from prehnite-pumpellyite facies Tobiishi sub-unit of the Kurosegawa belt, Kyush... |
This research paper focuses on the Kurosegawa belt in Kyushu, Japan. Considering the complex geological setting of this belt, what were the key findings regarding the metamorphic ages and facies of the Hakoishi and Tobiishi sub-units, and how do these findings contribute to understanding the origin and tectonic setting... | The Kurosegawa belt in Kyushu, Japan, is a geologically complex zone characterized by the chaotic occurrence of various rock types with diverse origins and metamorphic grades. Previous models proposed its origin as either a fragment of a large strike-slip fault system or an extended nappe from the Inner Zone of Southwe... | Sato white mica KAr Hakoishi Tobiishi Kurosega belt Kyushu.txt
Journal of Mineralogical and Petrological Sciences, Volume 109, page 258-270, 2014 White mica K-Ar ages from lawsonite-blueschist facies Hakoishi sub-unit and from prehnite-pumpellyite facies Tobiishi sub-unit of the Kurosegawa belt, Kyushu, Japan Eitaro SA... |
What are the key findings and results of the U-Pb, Lu-Hf isotopic, and trace element analyses of zircon from gabbroic rocks in the Oeyama ophiolite unit, and how do these findings contribute to our understanding of the subduction initiation along the proto-Japan arc, considering the background context of ophiolite form... | This study focuses on the Oeyama ophiolite unit, a crucial component in understanding the initiation of plate subduction in the proto-Japan region, dating back to the Neoproterozoic-Early Paleozoic. The research involved U–Pb and Lu–Hf isotopic and trace element analyses of zircon extracted from gabbroic rocks within t... | Sawada (2022) U-Pb and trace element analyses of oeyama ophiolite.txt
/gid00030/gid00035/gid00032/gid00030/gid00038/gid00001/gid00033/gid00042/gid00045 /gid00001
/gid00048/gid00043/gid00031/gid00028/gid00047/gid00032/gid00046Citation: Sawada, H.; Niki, S.;
Nagata, M.; Hirata, T. Zircon
U–Pb–Hf Isotopic and Trace Elemen... |
Based on the research paper, what are the key findings and results regarding the physical and chemical structure of the Oku-Aizu geothermal system, including the background and context that led to this research, and the important concepts or definitions used to characterize the system? | This research paper reviews the physical and chemical characteristics of the Oku-Aizu geothermal system in northeast Japan, aiming to construct a geochemical model of the system prior to full-scale exploitation. The research was motivated by the need to assess the system's potential as an energy source, given its known... | Seki (1991) physical and chemical structure of Oku-Aizu geotherma system.txt
Geochemical Journal, Vol. 25, pp. 245 to 265, 1991
The physical and chemical structure of the
Oku-aizu geothermal system, Japan
YOJI SEKI
Mineral Resources Department, Geological Survey of Japan, Higashi 1-1-3, Tsukuba 305, Japan
(Received ... |
What are the key findings regarding the age and isotopic composition of the Hayachine-Miyamori ophiolite complex, what important concepts about ophiolites and arc magmatism does this research address, and what is the geological background and motivation for studying this complex? | This research focuses on the Hayachine-Miyamori ophiolite complex in the Kitakami Mountains, Northeast Japan, aiming to understand arc magmatism processes. The key findings include a Sm-Nd isochron age of 510 ± 70 Ma for the ophiolite, indicating its crystallization age in the Ordovician period. The initial 143Nd/144Nd... | Shibata & Ozawa 1992 Ordovician arc ophiolite, the Hayachine and Miyamori complexes, Kitakami Mountains, Northeast Japan, isotopic ages and geochemistry.txt
Geochemical Journal, Vol. 26, pp. 85 to 97, 1992
the Ordovician arc ophiolite,
Hayachine and Miyamori complexes, Kitakami Mountains,
Northeast Japan: is... |
Based on this research, what are the key findings regarding the petrology and origin of the Myogazawa (Myo-type) and Kazamiyamada (Kz-type) volcanic rocks in the Utsunomiya area, considering their geochemical characteristics, isotopic signatures, and the geological context of the opening of the Japan Sea and the influe... | This research paper investigates the petrology of Early to Middle Miocene volcanic rocks in the Utsunomiya area of central Japan, classifying them into Myogazawa (Myo-type) and Kazamiyamada (Kz-type) based on geological and geochemical traits. The study aims to understand the origin and evolution of these rocks in the ... | shimiizu 2016 Myogazaw and Kazamiyamade volcano 45_160229_translated.txt
Rock Mineral Science 45, 138-152, 2016
The Myogazawa Formation and the northern part of Utsunomiya City, Tochigi Prefecture
Petrological studies of Kazami Yamada volcanic rocks
Petrology of Myogazawa and Kazamiyamada volcanic rocks
distributed in ... |
Based on this research paper, what were the key findings regarding the geochemistry of volcanic gases and hot springs at Satsuma-Iwojima, Japan? In your answer, please include the background and context that motivated this study, the important concepts and terms used to describe the geochemical processes, and the speci... | This research paper investigates the geochemistry of volcanic gases and hot spring waters at Satsuma-Iwojima, a volcanic island in Japan, building upon earlier work that identified anomalously high deuterium (δD) values in fumarolic condensates from this location. The background for this study is the need to understand... | Shinohara 1993 geochemsitry of volcanic gases and hot springs Satsuma Iwojima.txt
Geochemical Journal, Vol. 27, pp. 271 to 285, 1993
Geochemistry of volcanic gases and hot
Satsuma-Iwojima, Japan: Followingsprings of
Matsuo
HIROSHI SHINOHARAI, WERNER F. GIGGENBACH2, KOHEI KAZAHAYA3,
and JEFFREY W. HE... |
What are the key findings and results, important concepts and background context of the research in 'Shuto (2015) Arcoss-arc variations in geochemistry from NE japan arc'? | Based on the research paper 'Shuto (2015) Arcoss-arc variations in geochemistry from NE japan arc', the key findings and results include Shuto (2015) Arcoss-arc variations in geochemistry from NE japan arc.txt
Across-arc Variations in Geochemistry of
Oligocene to Quaternary Basalts from the NE
Japan Arc: Constraints on... | Shuto (2015) Arcoss-arc variations in geochemistry from NE japan arc.txt
Across-arc Variations in Geochemistry of
Oligocene to Quaternary Basalts from the NE
Japan Arc: Constraints on Source Composition,Mantle Melting and Slab Input Composition
K. Shuto1*, R. Nohara-Imanaka1, M. Sato2, T. Takahashi3, E. Takazawa3,
H. K... |
This research paper investigates crustal anatexis and the evolution of granitoid magma within a Permian intra-oceanic island arc setting in the Asago body of the Yakuno ophiolite, Southwest Japan. Considering this context, what are the key findings and results of the study regarding the petrogenesis of granitoid magma ... | This research paper investigates the petrogenesis of granitoid magma in the Asago body of the Yakuno ophiolite, Southwest Japan, a Late Paleozoic crustal section of an intra-oceanic island arc (OIA). The background and motivation stem from the understanding that granitoid formation in OIAs is crucial for understanding ... | Suda 2004 Crustal anatexis and evolution of granitoid magma in Permian intra-oceanic island arc, the Asago body of the Yakuno ophiolite, Southwest Japan.txt
Journal of Mineralogical and Petrological Sciences, Volume 99, page 339-356, 2004 Special Issue Crustal anatexis and evolution of granitoid magma in Permian intra-... |
What are the key findings regarding the Permian volcano-sedimentary sequence of the Hida Gaien belt, including the provenance of the sandstones and their implications for Permian sedimentation and tectonics in Northeast Asia? Additionally, explain the important concepts related to sandstone provenance analysis and zirc... | This research investigates the Permian volcano-sedimentary strata of the Hida Gaien belt in SW Japan using a combination of petrographic, geochemical analyses, and zircon U-Pb dating of sandstones. The key findings reveal a change in sandstone provenance during the Permian period. Initially, during the Early-Middle Per... | Suzuki (2021) Permian volcano-sedimentary seqeunce of Hida Gaien belt.txt
Journal of Asian Earth Sciences 219 (2021) 104888 Contents lists available at ScienceDirect Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes U-Pb ages and sandstone provenance of the Permian volcano-sedime... |
Based on this research, what are the key findings regarding the lithium content of saline spring waters in Japan, including the classification of these waters into different groups based on their lithium deviation coefficient (CLi), and what background context and concepts are important for understanding these findings... | This research paper investigates the geochemical implications of lithium content in 30 saline spring waters in Japan to understand their genesis.
**Key Findings and Results:**
* The lithium content in saline spring waters is generally *not* controlled by the present-day temperatures of the hydrothermal systems, su... | Takamatsu (1986) saline spring waters of japan.txt
Geochemical Journal, Vol. 20, pp. 143 to 151, 1986
NOTE
Geochemical implication of the
of saline spring waterslithium content
in Japan
NOBUKI TAKAMATSU', MASAYUKI IMAHASHII, KYOKO KAMIMURA1
and MAKOTO TsuTSUMI2
Department of Chemistry, Toho Unive... |
Based on Sr and Nd isotope data and major- and trace-element chemistry, what are the key findings regarding the origin and evolution of Late Paleogene to Neogene basalts and associated felsic volcanic rocks in Southwest Hokkaido, northern NE Japan arc? Explain the background context of Japan Sea opening and asthenosphe... | The research paper by Takanashi (2011) investigates the origin of Late Paleogene to Neogene basalts and associated felsic volcanic rocks in Southwest Hokkaido, northern NE Japan arc, using Sr and Nd isotopes and major- and trace-element chemistry. The key findings are as follows:
* **Key Findings and Results:**
... | Takanashi (2011) - Origin of Late Paleogene to Neogene basalts and associated coeval felsic volcanic rocks in Southwest Hokkaido, northern NE Japan arc.txt
Lithos 125 (2011) 368-392 Contents lists available at ScienceDirect Lithos ELSEVIER Origin of Late Paleogene to Neogene basalts and associated coeval felsic volcani... |
Based on Takashima et al.'s research on the Gokurakudaira Formation in Hokkaido, Japan, what are the key findings regarding its geology, petrology, and tectonic setting, what are the important concepts and terms used to describe the formation and its constituents, and what background and motivation led to this investig... | Takashima et al.'s research on the Gokurakudaira Formation, the uppermost ultramafic-mafic unit of the Horokanai Ophiolite in Hokkaido, Japan, presents key findings that challenge previous interpretations of the ophiolite's origin. The study's primary conclusion is that the Horokanai Ophiolite was formed in the Late Ju... | Takashima (2002) - Geology, petrology and tectonic setting of the Late Jurassic ophiolite in Hokkaido, Japan.txt
Journal of Asian Earth Sciences PERGAMON Journal of Asian Earth Sciences 21 (2002) 197-215 www.elsevier.com/locate/jseaes Geology, petrology and tectonic setting of the Late Jurassic ophiolite in Hokkaido, ... |
Based on the provided text, what are the key findings and results of the research on the Cretaceous forearc basin sediments in Hokkaido, Japan (Yezo Group), what important concepts are discussed in the paper, and what is the background and context that motivated this study? | This research paper focuses on the geology and stratigraphy of Cretaceous forearc basin sediments in Hokkaido, Japan, specifically the Yezo Group, to reconstruct the faunal, sedimentological, and environmental history of the northwest Pacific margin during the Cretaceous period.
**Key Findings and Results:**
* **Ne... | Takashima (2004) - Geology and stratigrahy of forearc basin sediments.txt
CRETACEOUS RESEARCH ELSEVIER Cretaceous Research 25 (2004) 365390 www.elsevier.com/locate/CretRes Geologyandstratigraphyofforearcbasinsedimentsin Hokkaido, Japan: Cretaceous environmental events on the north-westPacific margin Reishi Takashimaa, ... |
Based on this research paper, what are the key findings regarding the discovery and characterization of kosmochlor in the Yamanobo outcrop of the Renge metamorphic belt, including the geological context, the chemical composition of the kosmochlor and associated amphibole, and how this discovery relates to previous rese... | This research paper presents key findings related to the identification and characterization of kosmochlor-bearing eckermannite rock in the Yamanobo outcrop of Itoigawa City, Niigata Prefecture, Japan, within the Renge metamorphic belt. Here's a breakdown:
**Key Findings and Results:**
* **Discovery of End-Member K... | Takasu 2022 Renge metamorphoc belt Itogawa.txt
（ 37 ）Received August 31, 2021, Accepted Nobember 19, 2021, Editor TAKEUCHI Keiji
* San’in Branch; Professor emeritus, Department of Earth Science, Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu,
Matsue 690-8504, Japan (E-mail: takasu@riko.shi... |
What are the key findings and results regarding the thermal and geochemical structure of the Uenotai geothermal system, what are the important concepts and terms used to describe it, and what is the background and context that motivated this research? | The research paper focuses on the Uenotai geothermal system in southern Akita prefecture, Japan. The **key findings and results** reveal that it's a liquid-dominated system with a central zone experiencing aquifer boiling, which has evolved from a liquid state due to geothermal exploitation. The gas composition of the ... | Takeno (2000) Thermal and geochemical structure of Uenotai geothermal systems.txt
Thermal and geochemical structure of the
Uenotai geothermal system, Japan
Naoto Takeno*
Geological Survey of Japan, Tsukuba, Ibaraki, 305-8567, Japan
Received 12 January 1998; accepted 7 July 1999
Abstract
The Uenotai geothermal area is l... |
Based on this research, what are the key findings regarding the geochemical characteristics of the ophiolitic complex in the Mt. Tenzan area, what important concepts and definitions are explained related to this complex, and what background context motivated this study? | This research paper focuses on the geochemical characteristics of an ophiolitic complex located in the Mt. Tenzan area of northern Kyushu, Japan. The key findings are that the metamorphic complex in this area, consisting mainly of mafic rocks with smaller amounts of siliceous, calc-silicate, and ultramafic rocks, can b... | Tanaka (2022) - geochem characteristics of an ophiolite Complex Tenzan area, Kyushu.txt
MINERALOGY 2022 Journal of Mineralogical andPetrological Sciences(2022) 117:004 LETTER Geochemical characteristics of an ophiolitic complex from Mt. Tenzan area, Saga Prefecture, northern Kyushu Yusaku TANAKA, Keisuke EsHIMA and Mas... |
What are the key findings of this research regarding the uneven distribution of volcanoes along the SW Japan arc, and how does the age and thermal structure of the subducting Philippine Sea (PHS) plate influence this distribution? Also, explain the important concepts related to fluid release from the subducting slab an... | This research investigates the uneven distribution of Quaternary volcanoes along the SW Japan arc, specifically the contrast between the densely populated volcanic region of Kyushu Island and the sparsely populated Chugoku district. The key finding is that the age and, consequently, the thermal structure of the subduct... | Tatsumi 2020volcano spacing along SW Japan.txt
www.nature.com/scientificreports SCIENTIFIC REPORTS natureresearch OPEN ano spacinc along Sw pan arc caused bv ditference : in age of subducting lithosphere 8 z'@ oyuey enstey 's'zexo!yso yus!ous 'ebeuans !enqon 'e't!wnstel !yn!ysos Takumi Matsumoto* The SW Japan arc built... |
What are the key findings and results, important concepts and background context of the research in 'tectonics_kyushu'? | Based on the research paper 'tectonics_kyushu', the key findings and results include tectonics_kyushu.txt
3 The Geology and Tectonics of Kyushu. Part 1: Tectonic Setting and Evolution from 150 Ma to 15 Ma Japan is part of the "Ring of Fire," the belt of earthquakes and volcanic activity that distinguishes the active ma... | tectonics_kyushu.txt
3 The Geology and Tectonics of Kyushu. Part 1: Tectonic Setting and Evolution from 150 Ma to 15 Ma Japan is part of the "Ring of Fire," the belt of earthquakes and volcanic activity that distinguishes the active margins of the Pacific ocean from the passive margins of the Atlantic ocean (Figure 3.1... |
Based on the provided text, what are the key findings and results regarding the chemical composition of the young upper crust of the orogenic Japan Arc, what important concepts are introduced or referenced related to crustal composition and orogenic processes, and what background or motivation likely prompted this rese... | Based on the provided text, it appears that the research paper by Togashi (2000) focuses on understanding the chemical composition of the young upper crust of the orogenic Japan Arc.
**Key Findings and Results (Inferred):**
While the exact chemical compositions and values aren't present, the text heavily implies that... | Togashi (2000) - Young upper crustal chemical composition of the orogenic Japan Arc.txt
/C89/C111/C117/C110/C103/C117/C112/C112/C101/C114/C99/C114/C117/C115/C116/C97/C108/C99/C104/C101/C109/C105/C99/C97/C108/C99/C111/C109/C112/C111/C115/C105/C116/C105/C111/C110/C111/C102/C116/C104/C101
/C111/C114/C111/C103/C101/C110/C1... |
Based on the research presented in this paper, what are the key findings and results regarding the ultramafic rocks within the Kurosegawa tectonic zone and its eastern extension? In your answer, also explain the important concepts related to the Kurosegawa tectonic zone, its geological context within Southwest Japan, a... | This paper focuses on the ultramafic rocks found within the Kurosegawa tectonic zone and its eastern extension in Southwest Japan. The key findings and results are:
* **Two Distinct Textural and Chemical Types:** The ultramafic rocks contain two distinct textural and chemical types of olivine and clinopyroxene, indi... | Tokoyama (1987) ultramafic rocks of kurosegawa_translated.txt
J. Japan. Assoc. Min.
Petr. Econ. Geol.
82, 319-335, 1987
Ultramafic rocks in the Kurosegawa tectonic zone,
Southwest Japan
KAZUMI YOKOYAMA
Department of Geology, National Science Museum
Shinjuku-ku Hyakunin-cho 3-23-1, Tokyo 160, Japan
The Kurosegawa tecton... |
Based on this research, what are the key findings regarding the tectonic evolution of the Hidaka metamorphic belt, including the different stages of deformation, metamorphism, and igneous activity? What are the important concepts such as magmatic underplating, decollement, and crustal anatexis, and how do they relate t... | The research paper focuses on the tectonic evolution of lower crustal rocks in the Hidaka metamorphic belt, an exposed magmatic arc section in Hokkaido, northern Japan. The key findings revolve around the division of the belt's tectonic evolution into four distinct stages (Do, D1, D2, and D3), each characterized by spe... | Toyoshima (1994) - Tectonic evolution of lower crustal rocks in an exposed magmatic arc section in.txt
The Zsland Arc (1994) 3, 182-198
Thematic Article
Tectonic evolution of lower crustal rocks in an exposed magmatic arc
section in the Hidaka metamorphic belt, Hokkaido, northern Japan
TSWOSHI TOYOSHIMA,~ MASAYUKI ... |
What are the key findings and results, important concepts and background context of the research in 'Tsujimori (1999) - Blueschist_facies metamorphism during Paleozoic orogeny in southwestern Japan'? | Based on the research paper 'Tsujimori (1999) - Blueschist_facies metamorphism during Paleozoic orogeny in southwestern Japan', the key findings and results include Tsujimori (1999) - Blueschist_facies metamorphism during Paleozoic orogeny in southwestern Japan.txt
Research Article
Blueschist-facies metamorphism during... | Tsujimori (1999) - Blueschist_facies metamorphism during Paleozoic orogeny in southwestern Japan.txt
Research Article
Blueschist-facies metamorphism during Paleozoic orogeny in
southwestern Japan: Phengite K–Ar ages of blueschist-facies tectonic
blocks in a serpentinite melange beneath early Paleozoic Oeyama
ophiolite
... |
Based on this research paper, what are the key findings regarding the metamorphic evolution of the kyanite-staurolite-bearing epidote-amphibolites from the Oeyama belt, including the identified metamorphic stages, their associated P-T conditions, and the broader tectonic implications of these findings within the contex... | This research paper investigates the metamorphic evolution of kyanite-staurolite-bearing epidote-amphibolites from the Fuko Pass metacumulate unit (FPM) of the Early Palaeozoic Oeyama belt in SW Japan. The study identifies three distinct metamorphic stages (M1, M2, and M3) through microtextural relationships and minera... | Tsujimori (2004) Metamorphic evolution of kyanite staurolite_bearing epidote amphibolite.txt
Metamorphic evolution of kyanite–staurolite-bearing
epidote–amphibolite from the Early Palaeozoic Oeyama belt,
SW Japan
T. TSUJIMORI1,2AND J. G. LIOU2
1Research Institute of Natural Sciences, Okayama University of Science, Okay... |
Based on this research, what are the key findings regarding the formation and evolution of the Hida Marginal Belt (HMB), including the timing and nature of movements, the important concepts related to shear zones and fault-bound blocks, and the broader geological context that motivated this study? | This research paper investigates the formation and evolution of the Hida Marginal Belt (HMB) in Central Japan. The key findings are that the HMB, located between the Hida belt (a continental massif) and the Mino belt (a Mesozoic accretionary complex), developed through two distinct phases of strike-slip movements: Jura... | Tsukada 2003 Jurassic Dextral and Cretaceous Sinistral Movements Along the Hida Marginal Belt.txt
Gondwana Research, V 6, No. 4, pp. 687-698.
0 2003 International Association for Gondwuna Research, Japan
ISSN: 1342-937X
Jurassic Dextral and Cretaceous Sinistral Movements Along the
Hida Marginal Belt
Kazuhiro Tsuka... |
Based on the research paper, what are the key findings and results regarding the geochemistry of the Iwatsubodani Formation basalts in the Hida Gaien belt, Southwest Japan, and how do these findings relate to the background context of understanding Paleozoic geodynamics and the important concept of subduction initiatio... | The research paper's key finding is that the Iwatsubodani Formation in the Hida Gaien belt contains two distinct types of basalt, each indicative of a specific tectonic environment. Basalt A exhibits geochemical characteristics similar to MORB-like fore-arc tholeiitic basalt (FAB), characterized by high and uniform FeO... | Tsukada et al. 2017 Early Paleozoic subduction initiation volcanism of the Iwatsubodani Formation, Hida Gaien belt, Southwest Japan.txt
Int J Earth Sci (Geol Rundsch) (2017) 106:1429-1451 CrossMark DOI 10.1007/s00531-016-1437-6 ORIGINAL PAPER Early Paleozoic subduction initiation volcanism of the Iwatsubodani Formation... |
Based on Ueda and Miyashita's research, what are the key findings regarding the tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido, Japan? Explain the important concepts related to this discovery, and provide the background context and motivation for this research. | Ueda and Miyashita's research paper focuses on identifying and characterizing accreted fragments of an intraoceanic remnant arc within the Cretaceous accretionary complex of Hokkaido, Japan.
**Key Findings and Results:**
* The researchers identified an accretionary complex in Hokkaido containing fragments of a rem... | Ueda (2005) - Tectonic accretion of a subducted intraoceanic remnant arc in Cretaceous Hokkaido Japan and.txt
The Island Arc (2005) 14, 582–598Blackwell Science, LtdOxford, UKIAR The Island Arc 1038-48712005 Blackwell Publishing Asia Pty LtdDecember 2005144582598Thematic Article Subducted remnant arc in Cretaceous Ja... |
Based on this research paper investigating thermal and groundwaters in northwestern Hokkaido, Japan, what are the key findings regarding the origins and characteristics of these waters, especially concerning geopressured fluids? Furthermore, explain the important concepts related to stable and noble gas isotopes, their... | This research paper investigates the origins of thermal and groundwaters in northwestern Hokkaido, Japan, focusing on the presence and characteristics of geopressured fluids. The key findings are as follows:
* **Key Findings and Results:**
* The δD and δ18O plots reveal a linear relationship suggesting a mixin... | Ueda Stable and noble gas isotope study of thermal and groundwaters in Hokkaido.txt
545Geochemical Journal, V ol. 44, pp. 545 to 560, 2010
*Corresponding author (e-mail: akira@sci.u-toyama.ac.jp)
*Presnet address: Graduate School of Science and Engineering, Uni-
versity of Toyama, 3190 Gohuku, Toyama 930-8555, Japan.
C... |
Based on the research paper, what are the key findings regarding the relationship between tectonic shortening and volcanism in the Northeast Japan arc during the Quaternary, and how does this relate to the background context of the region and important concepts such as stress regimes and magma ascent? | The research paper investigates the relationship between tectonic shortening and coeval volcanism in the Northeast Japan arc during the Quaternary. Key findings include a notable shift in volcanic activity around 1.0 Ma. Before 1.0 Ma, large-volume felsic eruptions, forming large calderas in the frontal arc (a region o... | Umenda (2013) Tectonic shortening and coeval volcanism during.txt
Tectonic shortening and coeval volcanism during the Quaternary, Northeast Japan arc KOJI UMEDA1*, MASAO BAN?, SHINTARO HAYASHI? and TOMOHIRO KUSANO1 1 Tono Geoscientifc Research Unit, Geological Isolation Research and Development Directorate, Japan Atomi... |
Based on Wakita's review of the geology and tectonics of the Japanese Islands, what are the key findings regarding the geological units, their ages, tectonic events, and the broader context of Japan's position on the Eurasian continent, including the motivation for this review? | This review by Wakita (2013) focuses on the geology and tectonics of the Japanese Islands, providing an overview in the context of the International Geological Map of Asia (IGMA500). The motivation is to offer geoscientists and other users a clear understanding of the geology and tectonics of the Eurasian region, with ... | Wakita (2013) - geology and tectonics of Japanese islands a review.txt
Journal of Asian Earth Sciences 72(2013) 75-87 Contents lists available at SciVerse ScienceDirect Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes Geology and tectonics of Japanese islands: A review - The oss... |
Based on the provided text, what are the key findings regarding overturned structures in the Mine-Akiyoshidai area, how do these findings relate to the Akiyoshi Orogeny concept, and what broader tectonic framework is proposed to explain these features, including relevant concepts such as ocean plate stratigraphy and th... | This research paper challenges the traditional understanding of the Akiyoshi Orogeny by presenting evidence of widespread overturned structures within the Permian accretionary complex of the Mine-Akiyoshidai area, Yamaguchi, western Japan. The key findings are that significant overturning of strata is not limited to th... | Wakita (2024) - beyond the Akiyoshi orogeny.txt
JGS Research article Journal of the Geological Society https://doi.org/10.1144/jgs2023-170 | Vol. 181| 2024 | jgs2023-170 Beyond the Akiyoshi Orogeny: unravelling overturned structures and tectonic processes in the Permian accretionary complex of the Mine-Akiyoshidai area... |
Based on this review, what are the key findings regarding the geology and tectonics of the Japanese Islands, including the major geological units, their ages, and the significant tectonic events that have shaped the region? Also, describe the important geological concepts highlighted in the paper, and the background an... | This review paper on the geology and tectonics of the Japanese Islands presents several key findings. Firstly, it highlights the complex geological structure of Japan, composed of various geological units divided by age and origin, including Paleozoic continental margins and island arcs, Paleozoic accretionary complexe... | wakita 2013 geology and tectonics of japan islands.txt
Journal of Asian Earth Sciences 72(2013) 75-87 Contents lists available at SciVerse ScienceDirect Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes Geology and tectonics of Japanese islands: A review - The ossMark key to unde... |
Based on this research, what are the key findings regarding the preservation of sedimentary mélanges in Japanese accretionary complexes, what are the important concepts related to mélange formation and tectonic processes discussed, and what background context and motivation led to this investigation? | This research paper investigates the tectonic settings that allow for the preservation of sedimentary mélanges in the Paleozoic and Mesozoic accretionary complexes of southwest Japan. The key findings are that sedimentary mélanges, characterized by basalt and limestone clasts in a mudstone matrix and derived from ancie... | Wakita 2019 Tectonic setting required for the preservation of sedimentary melanges in Paleozoic and Mesozoic accretionary complexes of southwest Japan.txt
Gondwana Research 74 (2019) 90-100 Contents lists available at ScienceDirect GRNDEARCA Gondwana Research ELSEVIER journal homepage: www.elsevier.com/locate/gr Tecton... |
Summarize the key findings and results of this research paper on the basement geology of Japan, highlighting important concepts related to terranes and accretion, and explaining the background and motivation for conducting this research. | This research paper provides a comprehensive summary of the basement terranes of Japan, aiming to offer an accessible and up-to-date overview of the region's complex geological history. The key findings and results include a detailed description of various terranes, emphasizing their origins and relationships to the Ea... | Wallis (2020) The basement geology of Japan from A to Z.txt
REVIEW ARTICLE
The basement geology of Japan from A to Z
Simon R. Wallis1| Ken Yamaoka1| Hiroshi Mori2| Akira Ishiwatari3|
Kazuhiro Miyazaki4| Hayato Ueda5
1Department of Earth and Planetary Science,
Graduate School of Science, The University of
Tokyo, 7-3-1 H... |
Based on the research by Wang and Zhao (2005), what are the key findings and results regarding the seismic structure of the Tohoku and Hokkaido arc in Japan? What important concepts, like the sP depth phase, are utilized in this study? Furthermore, what background and motivation led to this research, considering previo... | This research by Wang and Zhao (2005) focuses on seismic imaging of the entire Tohoku and Hokkaido arc in Japan to better understand its seismic structure and seismotectonics.
**Key Findings and Results:** The study combined a large dataset of 176,431 P-wave and 110,953 S-wave arrival times from 5123 local earthquake... | Wang (2005) - Seismic imaging of the entire arc of Tohoku and Hokkaido.txt
Available online at www.sciencedirect.com PHYSICS INTERIORS ELSEVIER Physics ofthe Earth and Planetary Interiors 152 (2005)14412 Seismic imaging of the entire arc of Tohoku and Hokkaido in Japan using P-wave, S-wave and sP depth-phase data Zhi W... |
Based on this research paper investigating groundwater chemistry in Unzen, Nagasaki, Japan, what were the key findings and results regarding nitrate pollution and water chemistry, what important concepts were used to analyze the data, and what background information and context motivated this study? | This research paper investigates the spatial characteristics of groundwater chemistry in Unzen, Nagasaki, Japan, focusing on nitrate pollution. The key findings and results are as follows:
* **Nitrate Pollution:** The study found that polluted groundwater is distributed in northeastern, northwestern, and southwester... | water-13-00426.txt
ResearchGate Spatial Characteristics of Groundwater Chemistry in Unzen, Nagasaki, Japan ArticleinWater·February2021 0Ol: 10.3390/w CITATIONS READS 11 291 3authors: Kei Nakagawa Hiroki Amano Nagasaki University Tokai University 151PUBLICATIONS 1,465 CITATIONS 19 PUBLICATIONS 335 CITATIONS SEE PROFILE ... |
This research paper investigates the Mesozoic East Asian Continental Margin (EACM) and its relationship to Paleo-Pacific Plate subduction using gravity and magnetic anomalies. Considering this, what are the key findings and results of the study regarding the Mesozoic magmatic arc and its tectonic features? What importa... | This research paper focuses on understanding the Mesozoic East Asian Continental Margin (EACM) and its connection to the subduction of the Paleo-Pacific Plate. The key findings and results are centered around the identification and characterization of the Mesozoic magmatic arc on the EACM using gravity and magnetic ano... | WEIETA~1.txt
Tectonophysics 844 (2022) 229625 Contents lists available at ScienceDirect Tectonophysics ELSEVIER journal homepage: ww Paleo-Pacific plate subduction: Constraints from gravity and magnetic anomalies aFrontiersScience CenterforDeep OceanMultispheres and EarthSystem,KeyLabofSubmarineGeosciences andProspecti... |
What are the key findings and results of the research on okhotskite in the Kurosegawa Belt, what are the important scientific concepts explored, and what background and context motivated this study? | This research presents the first report of okhotskite in a lawsonite-blueschist-subfacies metachert from the Hakoishi subunit of the Kurosegawa Belt in Kyushu, Japan. The key findings include the discovery of okhotskite formed during peak metamorphism in equilibrium with other minerals like piemontite, Na pyroxene, mag... | Yabuta (2020) high pressure indicator minerals kurosegawa belt.txt
Journal of Mineralogical and Petrological Sciences, Volume 115, page 431-439, 2020 A new occurrence of okhotskite in the Kurosegawa belt, Kyushu, Japan: the okhotskite + Mn-lawsonite assemblage as a potential high-pressure indicator Wataru YABUTA and Ta... |
Based on the presented research on the Oguni geothermal field in Kyushu, Japan, what are the key findings regarding the reservoir's characteristics, the development plan for the geothermal power plant, and the background context that motivated this research? Discuss the reservoir's structure, fluid properties, permeabi... | This research paper details the reservoir characteristics and development plan for the Oguni geothermal field in Kyushu, Japan, where a 20 MW double-flash geothermal power plant was planned to begin operation in 2001.
**Background and Context:** The study was motivated by Electric Power Development Co., Ltd.'s (EPDC)... | yamada 2000 reservoir characteristics Oguni geothermal Kyushu.txt
Reservoir characteristics and development plan
of the Oguni geothermal field, Kyushu, Japan
Mamoru Yamada*, Keiji Iguchi, Shigetaka Nakanishi,
Norifumi Todaka
Electric Power Development Co., Ltd, 15-1, Ginza 6-Chome, Chuo-ku, Tokyo, 104-8165, Japan
Receiv... |
Based on the gravimetric study presented in this paper, what are the key findings regarding the distribution and characteristics of latest Cenozoic caldera-like basins in central Hokkaido, Japan, and how does this research build upon previous studies of caldera structures using gravity data, considering the regional te... | This paper investigates the gravity structures of central Hokkaido, Japan, using new gravity data to understand the characteristics of numerous sedimentary basins of the latest Cenozoic age (late Miocene to Quaternary). The research was motivated by the observation of numerous small-scale sedimentary basins in a mounta... | Yamamoto (2004) - Dense clustering of latest Cenozoic caldera-like basins of Central Hokkaido.txt
I n s t r u c t i o n s f o r u s e T i t l e D e n s e c l u s t e r i n g o f l a t e s t C e n o z o i c c a l d a r a - l i k e b a s i n s o f c e n t r a l H o k k a i d o , J a p a n , ... |
Based on Yamamoto's (2005) research on gravity-based fault mapping in the Ishikari Lowland, Hokkaido, Japan, what were the key findings regarding the Ishikari Teichi Touen Fault Zone (ITTFZ) using relief-shaded Bouguer gravity, what important concepts related to gravity data analysis were employed, and what background ... | Yamamoto's (2005) research paper focuses on using gravity data to map faults in the Ishikari Lowland of Hokkaido, Japan, specifically the Ishikari Teichi Touen Fault Zone (ITTFZ). The **key findings** are:
* **Relief-Shaded Bouguer Gravity Linearity:** A striking linearity of the relief-shaded Bouguer gravity along... | Yamamoto (2005) - Gravity-based fault mapping the Ishikari lowland.txt
Gravity-Based Fault Mapping:
The Ishikari Lowland, Hokkaido, Japan
A. Yamamoto
Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University,
N10-W8, Kita-Ku, Sapporo, 060-0810, Japan
Abstract. This paper examines gravity... |
Based on the study of the 500 Ma Asaji ultramafic-mafic intrusion in Kyushu, Japan, what are the key findings regarding its petrology and geochemistry, what important concepts like boninitic magmatism and ultramafic cumulates are central to interpreting these findings, and how does this intrusion help to understand the... | This research paper focuses on the Asaji ultramafic-mafic intrusion in Kyushu, Japan, to shed light on the early Cambrian geodynamic setting of proto-Japan. The key findings are that the ultramafic cumulates within the Asaji intrusion, specifically harzburgite, lherzolite-olivine websterite, and websterite, display pet... | Yamasaki (2020) - the 500 Ma Asaji ultramafic-mafic intrusion in Kyushu.txt
Journal of Asian Earth Sciences 188 (2020) 104107 Contents lists available at ScienceDirect Asia Journal of Asian Earth Sciences ELSEVIER journal homepage: www.elsevier.com/locate/jseaes Implications for boninitic magmatism in a late ... |
This research paper examines coeval volcanism in the late Miocene Engaru volcanic field of northeastern Hokkaido. What are the key findings regarding the origin and genetic relationships of the basalts, andesites, and rhyolites in this field, including the important concepts used to determine these relationships, and w... | This research paper investigates the origin of coeval basalt, andesite, and rhyolite volcanism in the late Miocene Engaru volcanic field in northeastern Hokkaido, Japan, specifically focusing on rocks erupted during 7-9 Ma. The **background and context** for this study is the presence of widespread Tertiary volcanic ro... | Yamashita (1999) - Coeval volcanism due to interaction of back-arc basin basalt magma_translated.txt
Jour. Geol. Soc. Japan, Vol. 105, No. 9, p. 625-642, September 1999
Coeval volcanism due to interaction of back-arc
basin basalt (BABB) magma with the island-arc
crust in the late Miocene Engaru volcanic field,
Northeas... |
Based on zircon geochronology of blueschist and serpentinite from the Kurosegawa zone in Shikoku, Japan, what are the key findings regarding the age and origin of these rocks, how do these findings relate to the concepts of tectonic erosion and accretionary complexes, and what is the broader context of this research in... | This research paper focuses on understanding the tectonic evolution of the Kurosegawa zone in Shikoku, Japan, through zircon geochronology of blueschist and serpentinite. The key findings are:
* **Blueschist Age and Origin:** Magmatic zircons in blueschist yielded 206Pb/238U mean ages of approximately 505-503 Ma. Th... | Yang et al. 2016 Proto-Japan and tectonic erosion, Evidence from zircon geochronology of blueschist and serpentine.txt
386 www.gsapubs.org | Volume 8 | Number 4 | LITHOSPHERE
Proto-Japan and tectonic erosion: Evidence from zircon
geochronology of blueschist and serpentinite
Qiong-Yan Yang1, M. Santosh1,2,4*, S. Maruya... |
Based on Yoshida's 1991 paper on the Nigorikawa geothermal system, what are the key findings regarding the geothermal water characteristics, including its origin, classification, and scaling issues, and how do these findings relate to the geological and developmental context of the system? | Yoshida's 1991 paper on the Nigorikawa geothermal system in southwest Hokkaido presents several key findings about the geothermal water, its origin, and the challenges associated with its utilization.
**Key Findings and Results:**
* **Water Classification:** The geothermal waters are classified into four groups ba... | Yoshida (1991) geochemistry of nogorikawa geothermal system.txt
Geochemical Journal, Vol. 25, pp. 203 to 222, 1991
Geochemistry of the Nigorikawa geothermal
southwest Hokkaido, Japansystem,
YUTAKA YOSHIDA
JMC Geothermal Research and Development Co., Ltd.
72-2, Sasamori, Ukai, Takizawa-mura, Iwate-gun,... |
Based on the geochemical analysis of geothermal steams from the Matsukawa geothermal area, what are the key findings regarding the origin and composition of gases, the geological factors influencing them, and the chemical equilibrium of specific reactions? Additionally, what is the background and motivation for studyin... | This research paper investigates the origin of gases and chemical equilibrium in the steam discharged from geothermal wells in the Matsukawa geothermal area, located in Northeast Japan. The study was motivated by the area's unique status as a vapor-dominated geothermal system and the site of Japan's first geothermal po... | Yoshida origin of gases and chemical equilibrium from steams of matsukama geothermal area.txt
Geochemical Journal. Vol. 18, pp. 195 to 202,1984
Origin
steamsof gases and chemical equilibrium
from Matsukawa geothermal area,among them in
Northeast Japan
YUTAKA YOSHIDA
Geothermal Development Division, ... |
Based on this research, what are the key findings regarding Bouguer gravity anomalies in the Japanese Archipelago and its surrounding waters, including specific locations and geological features? Explain the important concepts of Bouguer and Free-air gravity anomalies, and describe the background and motivation for con... | This research paper, based on marine gravity surveys conducted by the Hydrographic and Oceanographic Department of Japan since 1965, presents a detailed compilation of Bouguer gravity anomaly maps for the Japanese Island arcs and its adjacent seas (2004 Edition). The motivation behind this research is to provide a prec... | Yoshio (2004) Gravity anomaly japanese island arc_translated.txt
Marine Information Department Research Report No. 41 March 25, 2005
REPORT OF HYDROGRAPHIC AND OCEANOGRAPHIC RESEARCHES No.41 March, 2005
Bouguet Gravity Anomalies in the Japanese Archipelago and its surrounding waters (2004 Edition)
Ueda Yoshio
Bouguer G... |
Based on this research, what are the key findings and results regarding the igneous and metamorphic rocks of the Kurosegawa Tectonic Zone, what important concepts and rock types are discussed, and what is the background context and motivation that led to this investigation of the Kurosegawa Tectonic Zone? | This research paper focuses on the geologic and petrological characteristics of igneous and high-grade metamorphic rocks within the Kurosegawa Tectonic Zone, aiming to understand the zone's tectonic evolution in pre-Silurian times.
**Key Findings and Results:**
* **Siluro-Devonian Pyroclastic Rocks:** The paper ide... | Yoshiura (1985) rocks of the Kurosegawa belt_translated.txt
Igneous and High-Grade Metamorphic Rocks in
the Kurosegawa Tectonic Zone and Its Tectonic
Significance
Metadata
Language: English
URL
Publisher: Faculty of Science, Osaka City University
|Published date: 2024-09-09
| Keywords (Ja):
Keyword (En):
Created by: Yo... |
Based on this research paper, what are the key findings regarding arsenic levels in Kyushu's geothermal waters, and how does this relate to the background context of geothermal energy use and hot spring culture in Japan? Furthermore, what method was employed to address the arsenic contamination, and what are the key co... | This research paper investigates arsenic contamination in geothermal waters from 16 sites in Kyushu, Japan, a region known for its hot springs and geothermal energy production. The key finding is that most of the sampled geothermal waters had very high arsenic concentrations, exceeding 0.1 mg/l, which is more than ten ... | yoshizuka 2010 As in geothermal waters Kyushu.txt
Environ Geochem Health (2010) 32:297-302 DOI 10.1007/s10653-010-9300-3 ORIGINAL PAPER Analytical survey of arsenic in geothermal waters from sites in Kyushu, Japan, and a method for removing arsenic using magnetite Kazuharu Yoshizuka · Syouhei Nishihama · Hideki Sato ① ... |
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