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Fault or Balcones Fault Zone is an area of largely normal faulting [1] in the U.S. state of Texas that runs roughly from the southwest part of the state near Del Rio to the north-central region near Dallas [2] along Interstate 35. The Balcones Fault zone is made up of many smaller features, including normal faults, grabens, and horsts. [3]
The aquifer's recharge zone, [7] where surface water enters the aquifer, follows the Balcones Fault line, from Brackettville (roughly along U.S. Highway 90), through San Antonio, and north to Austin along but a few miles west of Interstate 35. On certain stretches of highway in Austin and San Antonio, signs indicate that the driver is entering ...
5.35% [1] Protected. 2.26% [1] The Edwards Plateau is a geographic region forming the crossroads of Central, South and West Texas, United States. It is named in honor of Haden Edwards. [2] It is bounded by the Balcones Fault to the south and east; the Llano Uplift and the Llano Estacado to the north; and the Pecos River and Chihuahuan Desert to ...
Frequently dry, Upper Barton Spring is fully submerged by Barton Creek during floods. The water at Upper Barton Spring also has a significantly different chemistry than the other springs. The entire area around Barton Springs is riddled with faults from the Balcones Fault Zone and features other, smaller springs. For example, about one mile (2 ...
The Salado Springs are located in the Balcones Fault zone, and they reach the surface through artesian pressure by way of faults in the Cretaceous Edwards limestone. The main recharge area for the springs is probably several miles to the southwest in Williamson County, where several faults intersect with Salado Creek.
The dispersal of extra magma warmed the water in the ocean, and was a conducive environment for calcareous-shelled organisms, which after death sank to the bottom of the ocean floor creating thick deposits of limestone. In addition to the displacement of water, an increase in injected magma raised CO₂ levels to around 2-6 times the current ...
Set in the scenic hills and canyons typical of the Texas Hill Country, the preserve lies about ten miles north of the Balcones escarpment and within the Balcones Fault Zone. The elevation ranges from approximately 1,280 to 2,000 feet (390 to 610 m). The local Woodard Cave Fault runs through the property on a general east-west line.
In addition to the association of groundwater availability with this locale along the Balcones Fault, the area is also considered an ecological dividing line for occurrence of some species; for example, the California Fan Palm, Washingtonia filifera occurs only at or west of Comal Springs, i.e. Balcones Fault zone. See also. Comal River