A Three-Dimensional Numerical Model of Predevelopment Conditions in the Death Valley Regional Ground-Water Flow System, Nevada and CaliforniaDIANE Publishing |
عبارات ومصطلحات مألوفة
30 degrees 40 80 KILOMETERS 80 MILES 95-PERCENT CONFIDENCE INTERVAL Amargosa River Amargosa Valley aquifer Ash Meadows Bullfrog Hills calibration cells Composite scaled sensitivity conceptual model constant-head D'Agnese Death Valley Regional defined degrees above horizon Digital Elevation Model discharge areas DVRFS model estimated parameter fault zone flow paths ground water ground-water basin ground-water discharge Ground-Water Flow System hydraulic conductivity hydraulic heads hydrogeologic framework hydrogeologic units hydrologic illumination from northwest infiltration Laczniak large hydraulic gradient m³/d METERS MODEL GRID BOUNDARY Model of Predevelopment NEVADA TEST SITE northwest at 30 Oasis Valley Pahranagat Pahrump Valley Pahute Mesa parameter values playa Predevelopment Conditions Range recharge regional flow system Regional Ground-Water Flow Sarcobatus Flat Shaded-relief base simulated southern sun illumination TEST SITE BOUNDARY Three-Dimensional Numerical Model tion Transverse Mercator projection U.S. Geological Survey Universal Transverse Mercator Valley Regional Ground-Water Valley section Vertical anisotropy water levels weighted residuals Yucca Mountain Zone 11 zone was delineated
مقاطع مشهورة
الصفحة ii - The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the US Geological Survey For additional information write to: District Chief US Geological Survey 333 W.
الصفحة 4 - Defense activities through its bureaus, including the US Fish and Wildlife Service, the Bureau of Land Management, and the National Park Service.
الصفحة 113 - A brief geologic and hydrologic reconnaissance of the Furnace Creek Wash area, Death Valley National Monument, California...
الصفحة 5 - Valley region is situated within the southern Great Basin, a subprovince of the Basin and Range physiographic province (Fenneman, 1931).
الصفحة 1 - The study area has a semi-arid to arid climate and is located within the southern Great Basin, a subprovince of the Basin and Range physiographic province.
الصفحة 8 - In contrast to earlier compressional tectonism, regional uplift, erosion, volcanism, and extension occurred in the Tertiary. As a result, the Death Valley region now includes numerous north-south-trending valleys containing continental alluvial, paludal, and colluvial materials that are interstratified with lava flows, tuffs, and tuffaceous sediments. The study area underwent intense volcanism during the middle to late Tertiary period and was heavily scarred by massive volcano-tectonic and caldera...
الصفحة 71 - Universal Transverse Mercator projection, Zone 11. Shaded-relief base from 1:250,000-scale Digital Elevation Model; sun illumination from northwest at 30 degrees above horizon...
الصفحة 8 - Mesozoic metasedimentary and metavolcanic rocks. The Sevier orogeny (Middle Jurassic and Late Cretaceous time) affected the entire area by contraction with regional detachments and was highlighted by north-south-trending thrust faulting (including the Pahranagat Range, Gass Peak, Lee Canyon, and Keystone thrusts within this study area) and simultaneous intrusions of granites of Mesozoic age throughout the Death Valley region (Grose and Smith, 1989) (fig.
الصفحة 8 - Antler orogeny also caused eastward thrusting of a more than 100,000-m-thick allocthon of deep-ocean shales, chert, and volcanic rocks. The leading edge of the Roberts Mountain thrust, formed during the Antler orogeny, is in the northwestern part of the Death Valley region (Grose and Smith, 1989). During Pennsylvanian time, the basin was filled, and shallow marine carbonates were deposited on the Mississippian-aged clastic rocks.
الصفحة 5 - Numerous playas contain saline deposits that indicate the evaporation of surface water and(or) shallow ground water from the playa surface. Some of the playas that have been deformed by Quaternary faulting contain springs where ground water is forced to the surface by juxtaposed lake sediments and alluvial aquifers (Bedinger and others, 1989).