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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 the west. [3]
Edwards and Trinity Aquifers map. The Edwards Aquifer is one of the most prolific artesian aquifers in the world. [2] Located on the eastern edge of the Edwards Plateau in the U.S. state of Texas, it is the source of drinking water for two million people, and is the primary water supply for agriculture and industry in the aquifer's region.
The Edwards Group is a geologic group in Texas. It preserves fossils dating back to the Cretaceous period . A stratigraphic column at the Mount Bonnell Fault location starts with the Lower Cretaceous Trinity Group overlain by the Edwards Group.
North and west of the faults are the Stockton, Edwards, and Comanche plateaux; these define a crustal block that was upthrown during the Neogene. This large region of central Texas, which extends from Brewster County east to Bexar, and northeast to the Red River features extensive Cretaceous shale and limestone outcrops.
The Llano River (/ ˈ l æ n oʊ / LAN-oh) is a tributary of the Colorado River, about 105 miles (169 km) long, in Texas in the United States. [1] It drains part of the Edwards Plateau in Texas Hill Country northwest of Austin.
Terrain is hilly on the field itself, with some steep canyon walls and numerous mesas. The region is along the edge of the Edwards Plateau. Elevations range from 2,300 feet (700 m) along the Pecos River to over 2,800 feet (850 m) on the highest mesas.
The highest hilltops, and the lower hills in the southern part of HCSNA, are capped by fairly resistant limestone of the Fort Terret formation within the Edwards Group, which is the dominant bedrock of the Edwards Plateau to the north. The rest of the preserve lies atop the softer, more easily eroded Upper Glen Rose Formation, also a limestone.
Lost Maples State Natural Area is a 2,906-acre (1,176 ha) area of hills and canyons on the upper Sabinal River in the Edwards Plateau Region of Texas.It is designated a Natural Area, rather than a State Park, which means the primary focus is the maintenance and protection of the property's natural state.