. The geography of Texas, physical and political. Fig. 13. Scarp of the Staked Plains, Blanco Canyon,Crosby Coi nty The Staked Plains, or the Llano Estacado, are underlain bysofter rocks. They are very level, — so level as to pro-duce the peculiar appearance of being uphill in everydirection, — yet they really dip quite gently to the south-east. Along their eastern margin or scarp they are deeplycut by steep-walled valleys, or canyons, which have beenfoi-med by the wearing action of the head waters of theRed, Brazos, and Colorado rivers. In the northwestern RELIEF AND SOILS 25 part of the Panh
. The geography of Texas, physical and political. Fig. 13. Scarp of the Staked Plains, Blanco Canyon,Crosby Coi nty The Staked Plains, or the Llano Estacado, are underlain bysofter rocks. They are very level, — so level as to pro-duce the peculiar appearance of being uphill in everydirection, — yet they really dip quite gently to the south-east. Along their eastern margin or scarp they are deeplycut by steep-walled valleys, or canyons, which have beenfoi-med by the wearing action of the head waters of theRed, Brazos, and Colorado rivers. In the northwestern RELIEF AND SOILS 25 part of the Panhandle this region attains a height of overfour thousand feet. 30. Region of Mountains and Basins. Between the RioGrande on the one side and the Rio Pecos and theStockton plateau on the other there are two or more linesof mountain elevation. The first includes the Guadalupe. Fig. 14. Northeast Poixt of Chisos Mountains, Igneous Rock,Brewster County {gw(i-da-loopa), Davis, Ord, Santiago {san-te-ago), Cor-azones (cor-a-sdnes), Rosillos {ro-siVyds), and Chisos(chesos) mountains. The highest point in the state is Guadalupe peak,9500 feet,i in the range of that name just south of the 1 These altitudes, excepting that of Santiago peak, are from A Mapof Texas and Parts of Adjoining Territories, compiled by Robert , and published by the United States Geological Survey, 1899.
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