News:
MEMORIAL DAY
May 19, 2026

The Library will be closed May 25, 2026 in observance of Memorial day, returning May 26, 2026.

LogBase Secured
September 12, 2025

LogBase Server is now securely served.

A certificate is now in place.

Website is live
September 12, 2025

GCGL website is now live.

Members LogBase Login

On-Site Resources for Members

Reference Journals & Technical Archives

In-house access to journals, maps, and reference sets including:

  • AAPG journals and bulletins
  • GCAGS transactions, trends, fields, and structure maps
  • Bureau of Economic Geology publications
  • Additional atlases, field studies, and structure map series
  • IFS Tobin Maps
  • Additional atlases, field studies, and structure map series
  • Basin Maps
  • USGS Survey Maps
  • Core Records and Sidewall Core Analysis
  • Velocity Surveys: Texas and South Louisiana

Log & Map Scanning / Copy Machines

  • High-quality scanning for well logs, maps, and paper archives

  • Scan output to TIF or PDF

  • Full color or black and white high-quality log printing available onsite

  • Large-format map scanning supported

  • Large-format map printing available (up to 36-inch width)

  • Turnaround based on volume; rush options when possible

  • Well Log Coverage in Texas RRC Districts 1-6 and South & North Louisiana

Production Data Access

  • Texas RRC historical production data (microfiche) — on-site viewing with staff support

  • TGS Longbow production data — access on request for members

Computer Workstations

  • Online access to the library and library indexes
  • USB / download options based on membership privileges

  • Staff assistance available for lookups and troubleshooting

Indirect Access & Networks

Reciprocal Library Access — members may request materials via our partner libraries in: Abilene · Austin · Corpus Christi · Midland · San Antonio · Tyler · Wichita Falls

Get Research Help

Our team can locate, scan, and prepare materials for your project.

Get Research Help

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