{
  "title": "World Petroleum Assessment 2000 Assessment Units",
  "source": "U.S. Geological Survey",
  "source_dataset": "World Petroleum Assessment 2000",
  "description": "Modernized GeoParquet representation of USGS-defined petroleum resource Assessment Units.",
  "original_format": "ESRI Shapefile",
  "output_format": "GeoParquet",
  "transformation": "Schema normalization, geometry validation, and format conversion.",
  "scientific_content_modified": false,
  "provenance": "Derived from the original USGS dataset.",
  "crs": "{\"$schema\": \"https://proj.org/schemas/v0.7/projjson.schema.json\", \"type\": \"GeographicCRS\", \"name\": \"WGS 84\", \"datum_ensemble\": {\"name\": \"World Geodetic System 1984 ensemble\", \"members\": [{\"name\": \"World Geodetic System 1984 (Transit)\"}, {\"name\": \"World Geodetic System 1984 (G730)\"}, {\"name\": \"World Geodetic System 1984 (G873)\"}, {\"name\": \"World Geodetic System 1984 (G1150)\"}, {\"name\": \"World Geodetic System 1984 (G1674)\"}, {\"name\": \"World Geodetic System 1984 (G1762)\"}, {\"name\": \"World Geodetic System 1984 (G2139)\"}, {\"name\": \"World Geodetic System 1984 (G2296)\"}], \"ellipsoid\": {\"name\": \"WGS 84\", \"semi_major_axis\": 6378137, \"inverse_flattening\": 298.257223563}, \"accuracy\": \"2.0\", \"id\": {\"authority\": \"EPSG\", \"code\": 6326}}, \"coordinate_system\": {\"subtype\": \"ellipsoidal\", \"axis\": [{\"name\": \"Geodetic latitude\", \"abbreviation\": \"Lat\", \"direction\": \"north\", \"unit\": \"degree\"}, {\"name\": \"Geodetic longitude\", \"abbreviation\": \"Lon\", \"direction\": \"east\", \"unit\": \"degree\"}]}, \"scope\": \"Horizontal component of 3D system.\", \"area\": \"World.\", \"bbox\": {\"south_latitude\": -90, \"west_longitude\": -180, \"north_latitude\": 90, \"east_longitude\": 180}, \"id\": {\"authority\": \"EPSG\", \"code\": 4326}}",
  "rows": 270,
  "columns": 28
}