Digital Geologic-GIS Map of the East Chattanooga Quadrangle, Tennessee

National Park Service Geologic Resources Inventory data layers for the East Chattanooga Quadrangle, adapted from a 1989 Tennessee Division of Geology map. The dataset includes GIS layers, tables, and ancillary documents in multiple formats, including a file geodatabase and OGC geopackage. Data locational accuracy is within 12.2 meters horizontally, based on the source map scale of 1:24,000.

Use Cases

• Analyze geologic unit distributions based on the provided GIS data layers.
• Conduct spatial analysis of geologic features like faults and folds based on the map content.
• Integrate geologic base layers into environmental or land-use planning models for the quadrangle area.

Strengths

• Includes multiple GIS format options (file geodatabase, OGC geopackage, shapefile) for compatibility.
• Provides ancillary PDF documents with geologic unit descriptions and metadata.
• Horizontal locational accuracy is specified as within 12.2 meters.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is derived from a 1989 source map, which may not reflect current surface conditions.
• Row count and dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Park Service (NPS) Geologic Resources Inventory (GRI), adapted from Tennessee Division of Geology source maps.

Collection Method

Digitized and compiled as part of the NPS Geologic Resources Inventory program.

Time Range

Source map from 1989.

Freshness

Last updated 2026-03-04 01:13:40.915318; freshness should be verified.

Geography

East Chattanooga Quadrangle, Tennessee, USA, specifically within Chickamauga and Chattanooga National Military Park.