Texas STATEMAP Program Summary, FY19 (2019–2020)

Abstract

Five geologic maps have been completed at a 1:24,000 scale in four project areas with support from STATEMAP and the Bureau of Economic Geology's State of Texas Advanced Resource Recovery program (STARR). Three of these maps were on the Texas Coastal Plain, including one (the Lake Stephenson quadrangle) on the upper Texas Coastal Plain in the Galveston Bay area and two (the Bloomington and Olivia quadrangles) on the middle Texas Coastal Plain in the Matagorda Bay area.

These maps continue efforts to:

  1. Better understand the evolution of the coastal plain in response to sea-level changes associated with numerous Quaternary glacial and interglacial cycles.
  2. Develop more effective methods to map low-relief coastal deposits using high-resolution topographic maps produced from airborne lidar data and near-surface geophysical methods.

High-resolution topography and geophysical methods both aid in the identification of stratal units and their distribution in areas where exposures are poor or nonexistent.

Mineral-resource mapping produced one map (the Katemcy quadrangle) to extend recent mapping of an industrial sand resource area in central Texas. This map facilitates the development of mineral resources of the state, emphasizing those that will help meet the demand for industrial sand for hydraulic fracturing and construction. The detailed map can be used to evaluate and explore the mineral-resource potential of the area.

Mapping in the central Texas urban growth corridor northeast of Austin produced one map (the Taylor quadrangle) that extends previous mapping in this critical urban growth and transportation corridor. This map addresses the ongoing need for planning and managing groundwater, surface water, land use, and construction projects where rapid population growth and suburban development have caused an increased demand for water and earth resources.

Description

LCSH Subject Headings

Citation

Collections