Skip to main content
U.S. flag

An official website of the United States government

USGS Gulf Coast Source Rock Database

March 31, 2021

The USGS Gulf Coast Source Rock Database (GCSRD) is an online repository for all publicly available source rock data (outcrop and subsurface) from the states of Florida, Georgia, Alabama, Mississippi, Louisiana, Arkansas, and Texas. "Source rock data" are defined in this context as data that include any of the following measured or calculated parameters:\n - Total organic carbon (TOC)\n - Various pyrolysis measurements (Tmax, S1, S2, S3, HI, OI)\n - Vitrinite or bitumen reflectance values\nAll data in the GCSRD have been extracted from previously published peer-reviewed literature or as USGS-released data sets; no new measurements are included. The underlying data set is presented as an interactive, map-view application where the user can filter by state, original publication, data type, age, or formation, which can be displayed and exported as needed.