Summary Report for the El Paso, Texas, STATEMAP Project, 1995

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1995

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The El Paso STATEMAP project is focused on mapping the El Paso-Rio Grande border area in far West Texas. Geologic mapping is critical in this area because of the pressures of development, exploitation of natural resources, and degradation of the environment from increased industrialization. In addition, the North American Free Trade Agreement (NAFTA) is stimulating additional growth in this area. El Paso is rapidly growing northward along the flanks of the Franklin Mountains and eastward along the Rio Grande valley, valley border margins, and Hueco Bolson floor paralleling Interstate Highway 10 and U.S. Highway 62/180. Much of the area north of U.S. Highway 62/180 is military land of Fort Bliss and thus is not available for urbanization.

This second year of 1:24,000-scale geologic mapping of the El Paso, Texas, region resulted in the completion of twelve quadrangles (fig. 1). The completed Fort Bliss NE and Fort Bliss SE quadrangles are within part of the basin-floor area of the Hueco Bolson. The Nations East Well, Nations South Well, Hueco Tanks, Helms West Well, and Clint NE quadrangles encompass the eastern margin of the basin floor and the western edge and foothills of the Hueco Mountains. The Ysleta, San Elizario, Clint NW, Clint, and Clint SE quadrangles contain the basin floor, Rio Grande valley, and valley border. Our mapping during this year benefited greatly from previous studies concerning various geologic aspects of the region. Some of these studies include work by Richardson (1909), King and others (1945), Albritton and Smith (1965), Strain (1966), Cliett (1969), Wise (1977), Seager (1980), Gile and others (1981), Henry and Gluck (1981), Collins and Raney (1991), Gustavson (1991), and Monger (1993). We also benefited from the many articles within the Permian Basin Section SEPM Field Conference Guidebook (Meader-Roberts, 1983) that describe different aspects of the geology of the southern Hueco Mountains. Appendix A describes the stratigraphy of the mapped area in detail.

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