LockNToad/cartolegend-rc8-gis

CartoLegend RC8 GIS outputs

Visual RC docs · RC4-Modern release · Source citations

This repository contains GIS data, not model weights.

12 public USGS map sheets are provided as matching GeoJSON and GeoPackage files in data/.

• 8,734 proposed map-unit polygons
• 577 map-text points
• 12 sheet neatlines
• EPSG:4326 / longitude-latitude

Two real examples

Public source scan	Saved overlay
Frederick · 10,250 × 14,537 source pixels	2,743 contours in the pictured overlay; 1,042 map-unit features in the delivered GIS file
Needles · 11,100 × 8,850 source pixels	716 contours in the pictured evaluation; pixel F1 66.08%. The later delivered GIS file has 591 map-unit features

Bright colors identify assigned unit codes. Dark areas are unassigned. Overlay colors are display IDs, not confidence scores.

Files

Sheet	Map-unit polygons	Map-text points	Median georeference error
AK Dillingham	979	68	826.1 m
AK Hughes	1,018	68	609.8 m
AR St. Joe	317	31	4.5 m
AZ Grand Canyon	1,250	16	132.0 m
AZ Pipe Spring	1,859	96	49.3 m
CA/AZ Needles	591	65	6.4 m
CA Elsinore	282	69	2.6 m
CA Marble Canyon	94	1	12.3 m
DC Frederick	1,042	20	679.1 m
KY West Franklin	608	76	1.8 m
NH Hartland	559	53	4.6 m
OR Carlton	135	14	5.3 m

Each file has three layers:

Layer	Geometry	Main fields
map_units	Polygon	unit_code, unit_name, description, area_px
toponyms	Point	name, feature_type, status, gazetteer_dist_km
neatline	Polygon	sheet extent and georeference error

Read before use

• These are proposals for review, not authoritative geologic boundaries.
• Map-text points come from printed sheet text. map_only is unverified; likely_unit_code is not a place name.
• Georeference error varies by sheet and is shown above.
• SHA256SUMS covers every published data file and preview image.

The source publications are listed in SOURCES.md. USGS-authored material is generally public domain in the United States; third-party material, if present in a source publication, keeps its original rights. The example overlays are derivative visualizations of the cited scans.