A Hydrogeologic Map of the Death Valley Region, Nevada and California, Developed Using GIS Techniques PDF Download
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Author: Claudia C. Faunt
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 28
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Book Description
Author: Claudia C. Faunt
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 28
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Book Description
Author: Claudia C. Faunt
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 18
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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In support of Yucca Mountain site characterization studies, a hydrogeologic framework was developed, and a hydrogeologic map was constructed for the Death Valley region. The region, covering approximately 100,000 km2 along the Nevada-California border near Las Vegas, is characterized by isolated mountain ranges juxtaposed against broad, alluvium-filled valleys. Geologic conditions are typical of the Basin and Range Province; a variety of sedimentary and igneous intrusive and extrusive rocks have been subjected to both compressional and extensional deformation. The regional ground-water flow system can best be described as a series of connected intermontane basins in which ground-water flow occurs in basin-fill deposits, carbonate rocks, clastic rocks, and volcanic rocks. Previous investigations have developed more site-specific hydrogeologic relationships; however, few have described all the lithologies within the Death Valley regional ground-water flow system. Information required to characterize the hydrogeologic units in the region was obtained from regional geologic maps and reports. Map data were digitized from regional geologic maps and combined into a composite map using a geographic information system. This map was simplified to show 10 laterally extensive hydrogeologic units with distinct hydrologic properties. The hydraulic conductivity values for the hydrogeologic units range over 15 orders of magnitude due to the variability in burial depth and degree of fracturing.
Author: Frank A. D'Agnese
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 28
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Author: A. Keith Turner
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 30
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Author:
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Category :
Languages : en
Pages :
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The purpose of this map is to provide tectonic interpretations in the Death Valley ground-water model area to be incorporated into a transient ground-water flow model by the U.S. Geological Survey (D'Agnese, 2000; D'Agnese and Faunt, 1999; Faunt and others, 1999; and O'Brien and others, 1999). This work has been conducted in collaboration with the U.S. Department of Energy in order to assess regional ground-water flow near the Nevada Test Site (NTS) and the potential radioactive waste repository at Yucca Mountain. The map is centered on the NTS and its perimeter encircles the entire boundary of the numerical flow model area, covering a total area of 57,000 square kilometers. This tectonic map is a derivative map of the geologic map of the Death Valley ground-water model, Nevada and California (Workman and others, 2002). Structures portrayed on the tectonic map were selected from the geologic map based upon several criteria including amount of offset on faults, regional significance of structures, fault juxtaposition of rocks with significantly different hydrologic properties, and the hydrologic properties of the structures themselves. Inferred buried structures in the basins were included on the map (blue and light blue dotted lines) based on interpretation of geophysical data (Ponce and others, 2001; Ponce and Blakely, 2001; Blakely and Ponce, 2001). In addition, various regional trends of fault zones have been delineated which are composed of multiple smaller scale features. In some cases, these structures are deeply buried and their location is based primarily on geophysical evidence. In all cases, these zones (shown as broad red and blue stippled bands on the map) are significant structures in the region. Finally, surface exposures of Precambrian crystalline rocks and igneous intrusions of various ages are highlighted (red and blue patterns) on the map; these rocks generally act as barriers to groundwater flow unless significantly fractured.
Author:
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Category : Groundwater flow
Languages : en
Pages : 136
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Author: Frank A. D'Agnese, Claudia C. Faunt, A. Keith Turner, Mary C. Hill
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
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Author:
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ISBN:
Category : Hydrology
Languages : en
Pages : 70
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Author:
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ISBN:
Category : Radioactive waste disposal in the ground
Languages : en
Pages : 300
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