Provenance
Freshness & coverage
Methods (5)
getMapUnits
readBedrock map-unit polygons (~1837) as GeoJSON — belt, group, formation, eon/era/period, absolute age
Filter period, era, eon, belt, group, formation, unit, bbox, or near; returns.
getStructure
readStructural lines (193) as GeoJSON — faults and folds
Filter type or name plus bbox/near; returns MultiLineString GeoJSON.
getDikes
readDiabase dike lines (134) as GeoJSON
Filter type plus bbox/near; returns MultiLineString GeoJSON; source is Diabase.
getUnitExamples
readReference outcrop example points (148) as GeoJSON
Filter mapUnit, area, name, bbox, or near; returns Point GeoJSON.
getServiceInfo
readDescribe layers, fields, counts, enums, native CRS, and deprecated 1985 map.
