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.
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.