Unified Interior Regions

Texas

The Southwest Region ranges from the Colorado Rockies to the Gulf Coast and the Western Deserts to the Great Plains. The Southwest Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

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Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River
October 31, 2012

Seeps along limestone outcrop, Jim John Creek

Seeps along limestone outcrop downstream from where Jim John Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012).
October 31, 2012

Travertine deposits, Post Oak Falls near Tow, Texas

Travertine deposits near site 4 (Post Oak Falls near Tow, Texas, October 31, 2012) (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River.
October 31, 2012

Faulting in limestone outcrop, Greenwood Creek

Faulting in limestone outcrop downstream from where Greenwood Creek flows into the Colorado River, October 31, 2012 (photograph by Jennifer Wilson, U.S. Geological Survey).

SIR 2015–5098

Sam Rayburn Lake, September 2012
September 18, 2012

Sam Rayburn Lake

Sam Rayburn Lake, September 2012. Photograph by David LaRue, U.S. Army Corps of Engineers.

SIR 2012–5202

Granger Lake, September 2012
September 12, 2012

Granger Lake

Granger Lake, September 2012. Photograph by Ben Bohac, U.S. Army Corps of Engineers.

SIR 2012–5202

Exposed Austin Group in road cut excavation located on south side of U.S. Highway 90.
May 29, 2012

Austin Chalk roadcut

Exposed Austin Group in road cut excavation located on south side of U.S. Highway 90 and approximately midway between Sabinal and Knippa Texas, eastern Uvalde County, Tex. Photograph taken May 29, 2012.

SIR 2013–5149

Sandstone ledges in the Escondido Formation located approximately 7 miles south-southeast of the community of D’Hanis in Medina.
April 13, 2012

Sandstone ledges, Escondido Formation, Medina County

Sandstone ledges in the Escondido Formation located approximately 7 miles south-southeast of the community of D’Hanis in Medina County, Texas. Photograph taken April 13, 2012, by Robert R. Morris.

SIR 2013–5149

Image: Drill Rig in Karnes County
January 25, 2012

Drill Rig in Karnes County

A drill rig on a drill pad in Karnes County, Texas.

 

Outcrop of eroded and dissected extinct volcano located adjacent to the Frio River, east of Uvalde, Uvalde County, Texas.
January 12, 2012

outcrop of eroded, dissected extinct volcano, Frio River

Photograph showing outcrop of eroded and dissected extinct volcano located adjacent to the Frio River and east of the city of Uvalde in Uvalde County, Texas. Basalt is remnant of volcanic neck, and adjacent to the basalt is pyroclastic material ranging from fine-grained material to volcanic bombs, which formed the slope of the volcano. Photograph taken January 12, 2012, by

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Benbrook Lake, December 2011
December 21, 2011

Benbrook Lake

Benbrook Lake, December 2011. Photograph by Glenn Harwell, U.S. Geological Survey.

SIR 2012–5202

USGS scientist Dave Brandt holds a captured whooping crane .
December 6, 2011

USGS scientist holds a captured whooping crane.

USGS scientist Dave Brandt holds a captured whooping crane while Dr. Barry Hartup with the International Crane Foundation assesses the bird's health before marking.

Cypress knees, Big Cypress Creek, Texas
July 27, 2011

Cypress knees, Big Cypress Creek, Texas

Cypress knees, Big Cypress Creek, Texas, July 27, 2011. Photograph taken by James B. Moring, U.S. Geological Survey.

SIR 2013–5058