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March 2019 Bulletin
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February 2019 Bulletin
A geophysical attempt to locate a potential cave in the near-vicinity of a water well at Anacacho Limestone setting, Medina County, TexasBy Mustafa Saribudak and Alf HawkinsEnvironmental Geophysics Associates, Austin, Texas Abstract Resistivity and natural potential (NP, also called self-potential) surveys were performed in the eastern part of Medina County, Texas. According to the geological data available, the Upper Cretaceous Anacacho limestone crops out at the study area.
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January 2019 Bulletin
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November Bulletin
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October 2018 Bulletin
Evaporites in the McKnight Formation: Evidence for a Miocene Age to Fresh Water Flushing of the Maverick Basin, Southwest TexasBy Mark E. Thompson and M. Jeff RidingsPetroleum GeologistsSan Antonio, Texas IntroductionThe Maverick Basin is a relatively small depositional basin of Mesozoic age located in extreme southwest Texas (Fig. 1). The basin originated in the Late Triassic to Early Jurassic as a rift basin created during the early formation of the Gulf of Mexico.
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September 2018 Bulletin
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Upcoming Events
STGS Walnut Creek Field Trip
February 8th, 2025
TDLR Carpool from Petroleum Club at 6:30am
OR
Meet us at the Bureau of (more...)
STGS February Luncheon
February 12th, 2025
Located at San Antonio Petroleum Club
8620 N. New Braunfels, 7th Floor
11:30am (more...)
STGS Wichita Paleoplain Field Trip
March 22nd, 2025
Save the date for a field trip to the heart of the Texas hill country to view (more...)