Digital Surficial Geologic Map of the Big Thicket National Preserve, Texas

A National Park Service Geologic Resources Inventory dataset for the Little Pine Island Bayou Corridor Unit and vicinity. The data includes GIS layers and tables in ESRI geodatabase and OGC geopackage formats, derived from a 1982 Lamar University map. Metadata documents provide geologic unit descriptions and guidance for data extraction.

Use Cases

• Map surficial geology and landforms based on the provided geologic unit descriptions.
• Conduct spatial analysis of depression boundaries and geologic features within the corridor unit.
• Integrate geologic layers with other environmental datasets for habitat or watershed studies.
• Visualize geologic resources for educational or park management purposes using the provided ArcGIS Pro or QGIS files.

Strengths

• Includes ancillary PDF documents with detailed geologic unit descriptions and map information.
• Data is available in multiple standard GIS formats (ESRI geodatabase, OGC geopackage).
• Source map scale of 1:24,000 provides a defined level of locational accuracy.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Based on the source map scale, features have a stated horizontal locational accuracy of 12.2 meters (40 feet).
• Row count and specific data volume are unknown, which may limit suitability assessment.

Provenance

Source

National Park Service Geologic Resources Division (GRD), adapted from a Lamar University map by Aronow (1982).

Collection Method

Completed as a component of the Geologic Resources Inventory (GRI) program.

Time Range

Source map from 1982.

Freshness

Last updated 2026-03-04 01:02:28.545886; freshness should be verified.

Geography

Little Pine Island Bayou Corridor Unit and vicinity, Big Thicket National Preserve, Texas.