Stratigraphic nomenclature and geologic sections of the Gulf Coastal Plain of Texas

Abstract

Geologic sections showing the subsurface delineation of approximately 100 Stratigraphic units composing the Mesozoic and Cenozoic Eras illustrate the interrelation of these units across most of the Gulf Coastal Plain of Texas. The geologic names that constitute the nomenclature have been published, and the vast majority are approved for use by the U.S. Geological Survey. Four dip sections and four strike sections, extending from the land surface to a maximum of about 18,000 feet below sea level, provide continuity of correlation from the outcrop to the deep subsurface. Stratigraphic units containing water with less than 3,000 milligrams per liter concentration of dissolved solids are shown on the geologic sections and serve as an indicator of water quality in the Gulf Coastal Plain of Texas.

Channel-belt scaling relationship and application to early Miocene source-to-sink systems in the Gulf of Mexico basin

“…These well logs were extracted from several publications (Spradlin, 1980;Dodge and Posey, 1981;Bebout and Gutierrez, 1983;Eversull, 1984;Galloway et al, 1986;Foote et al, 1990;Baker, 1995;Young et al, 2010Young et al, , 2012. The lower Miocene boundaries are well constrained in previous publications by biostratigraphic data or by detailed well correlation based on key depositional surfaces (e.g., erosional unconformities and marine flooding surfaces) in the GOM region.…”

New insights into surface-water/groundwater exchanges in the Guadalupe River, Texas, from floating geophysical methods

“…The apparent upwelling of water to the stream lessened in subreach 3 (the SP signal was generally less than +10 mV) as the channel becomes more dominated by alluvium and channel sands downstream. The SP profile was relatively neutral in subreach 3 and then increased again at the end of subreach 4 (as much as approximately +30 mV), possibly indicating the transition into the Reklaw Formation, which is the next downstream hydrostratigraphic unit (Baker, 1995;George, 2011). Numerical modeling of the SP profile also indicated that at some reaches the surface-water/groundwater exchanges might be more influenced by regional ambient groundwater exchange flows, whereas at other reaches localized hyporheic exchange flows might be a larger contributor.…”

“…2). The shift in the ERT profile occurred approximately where the Carrizo-Wilcox aquifer transitions from an outcrop to a subcrop (in other words, is no longer present at the surface) and likely at the beginning of the Reklaw Formation (Baker, 1995).…”

Gravitational Study of the Hastings Salt Dome and Associated Faults in Brazoria and Galveston Counties, Texas

“…Data on salt dome locations from two sources; 2004 salt dome shapefile (Lopez, 1995;Ewing and Lopez, 1991;Martin, 1980) and 1984 salt dome shapefile (Martin, 1980) (Bruce, 1973;Solis, 1981). Baker, 1995). Highlighted in red rectangle is the stratigraphic sequence peculiar to study area.…”