Digital Surficial Geologic-GIS Map of the Lance Rosier Unit and Vicinity, Big Thicket Nati

A GIS dataset of surficial geology for the Lance Rosier Unit and vicinity within Big Thicket National Preserve, Texas, completed as part of the National Park Service's Geologic Resources Inventory program. The data is adapted from an unpublished 1982 map by Aronow from Lamar University and is available in multiple GIS formats, including an ESRI file geodatabase and an OGC geopackage. Based on a source map scale of 1:24,000, features have a horizontal locational accuracy within 12.2 meters (40 feet).

Use Cases

• Mapping surficial geology units based on the provided GIS data layers and geologic unit descriptions.
• Conducting spatial analysis of geological features within the Lance Rosier Unit based on the geospatial boundaries.
• Integrating geological data into environmental models for the Big Thicket National Preserve based on the provided map information.
• Creating visualizations and maps for park management or educational purposes based on the provided ArcGIS Pro and QGIS files.

Strengths

• Data is provided in multiple standard GIS formats, including ESRI file geodatabase and OGC geopackage.
• Includes ancillary documentation with geologic unit descriptions and metadata in a user-friendly FAQ PDF.
• Horizontal locational accuracy is defined as within 12.2 meters based on the 1:24,000 source map scale.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset's row count and total size are unknown, which may limit suitability assessment.
• Data is adapted from an unpublished 1982 source map; freshness should be verified for contemporary applications.

Provenance

Source

National Park Service (NPS) Geologic Resources Division (GRD), adapted from Lamar University unpublished map by Aronow (1982).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 01:04:26.091790; freshness should be verified.

Geography

Lance Rosier Unit and vicinity, Big Thicket National Preserve, Texas.