LYCOS RETRIEVER 
Edwards Plateau: Region
built 607 days ago
The flat-lying rocks of the Edwards Plateau are dissected in overall dendritic patterns. Careful inspection of the scene will reveal local linear trends for some channel segments. These result from joints that developed during gentle warping of the brittle rocks in this region.
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The flora of the Edwards Plateau presents many peculiar variations from that of the adjacent regions, especially the Rio Grande Plain. It shows three distinct phases, viz: the phase of the stream bottom, that of the breaks, and that of the summit. The low, alluvium filled valleys of the rivers present conditions of loose soil and constant moisture favorable to the growth of trees; hence narrow ribbons of forest are found along the streams and extending up into the semiarid region, far west of the limits of the upland forests of the humid region and dissociated from them. These embrace many species, such as the elm, chestnut oak,walnut,sycamore,cypress,live oak, and pecan. The live oaks and pecans attain great size and beauty. The occurrence of the cypress is a peculiar anomaly.
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This species survives today on the Edwards Plateau in Edwards, Real, Kinney and Val Verde counties. TBBA atlasers found possible breeding evidence for this secretive bird in latilong blocks 29100 and 31098 in this region. The species ... survives in the Davis, Del Norte, Glass and Guadalupe mountains of the Trans-Pecos (Albers and Gehlbach 1990, Wauer 1996, L. Henderson, pers. comm.). In the Trans-Pecos TBBA investigators found 3 possible breeding records in latilong 31104 and one confirmed, 3 probable and 2 possible records in 30104; 3 confirmed, 4 probable and a possible in 30103. Since each quail is a permanent resident in a small area, all records may represent breeding populations.
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There are ... many remarkable springs in that portion of the Rio Grande Plains and Edwards Plateau lying between the Colorado and Pecos rivers, which will be discussed in this paper. These belong to two distinct classes, each characterizing one of the geographic subdivisions mentioned, aid each exhibiting a method of escape of the underground water of the region. One line of these springs follows approximately the margin of the Rio Grande Plain, close to the line of
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