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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]
The local bedrock is exposed throughout much of the preserve. 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 ...
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 Texas Hill Country is a geographic region of Central and South Texas, forming the southeast part of the Edwards Plateau. Given its location, climate, terrain, and vegetation, the Hill Country can be considered the border between the American South and Southwest. [1]
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.
Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum. [1] It has also been documented for weathering -resistant rocks, such as quartzite , given the right conditions. [ 2 ]
Escarpment formed by the Balcones Fault at Mount Bonnell Balcones Fault Trend and affected counties Geologic map of the Balcones, and the Mexia-Talco-Luling Fault Trends, where black lines are faults, the blue shaded area is the Claiborne Group, yellow is the Jackson Group, and tan is the Wilcox Group
Balcones Canyonlands is a national wildlife refuge located in the Texas Hill Country to the northwest of Lago Vista, Texas. [1] The refuge was formed in 1992 to conserve habitat for two endangered songbirds, the golden-cheeked warbler (Setophaga chrysoparia) and the black-capped vireo (Vireo atricapilla), and to preserve Texas Hill Country habitat for numerous other wildlife species. [2]