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A. Geologic Section B. Hydrogeologic Section SECTIONS SHOWING

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A. Geologic Section B. Hydrogeologic Section SECTIONS SHOWING WATER-RESOURCES INVESTIGATIONS REPORT 96-4109 Prepared in cooperation with the Regional ground-water flow at and near the Nevada Test Site (sections)—PLATE 2 OF 4 U.S. DEPARTMENT OF THE INTERIOR Laczniak and others, 1996, Summary of hydrogeologic controls U.S. GEOLOGICAL SURVEY U.S. DEPARTMENT OF ENERGY on ground-water flow at the Nevada Test Site, Nye County, Nevada 116°22'30" A. Geologic Section A A' Rainier Mesa NEVADA CALIFORNIA FEET FEET Rock Valley 8,000 Rainier Mesa Ex.1 8,000 Eleana fault system Dolomite Hill Range Tongue Wash fault Yucca Flat French Peak Frenchman Flat Mercury Specter Range Amargosa Flat Amargosa Valley Funeral Mountains Death Valley Valley UE-2ce Yucca Carpetbag fault Yucca faultU-7a UE-6e Lake U-11f Water Well 5b Travertine Well Bat Mountain fault Tracer 2 Devils Hole Travertine Springs SEA LEVEL SEA LEVEL -5,000 -5,000 Major buried fault NO VERTICAL EXAGGERATION in this zone; see text B. Hydrogeologic Section A Ash Meadows ground-water subbasin Alkali Flat - Furnace Creek Ranch ground-water subbasin A' Rainier Mesa FEET Eleana FEET Range Rock Valley 8,000 Rainier Mesa Ex.1 8,000 Dolomite Hill Yucca fault system Funeral Mountains Yucca Flat Lake French Peak Frenchman Flat Specter Range Amargosa Flat Amargosa Valley Death Valley UE-2ce U-7a Ash UE-6e Amargosa River U-11f Meadows Water Well 5b Travertine Well Tracer 2 Devils Hole Travertine Springs SEA LEVEL SEA LEVEL -5,000 -5,000 NO VERTICAL EXAGGERATION MILES 5 0 5 1015 20 51020300 51525 KILOMETERS EXPLANATION Geologic / hydrogeologic units—Units are shown on geologic section and hydrogeologic section Contact—Dashed where uncertain or inferred. Short dashed line on hydrogeologic section and are defined in terms of both their geologic and hydrologic characteristics. Description shows geologic contact in unsaturated rock above water table preceding slash designates geologic unit; description following slash designates regional (plate 1) and subregional (plate 3) hydrogeologic units. If only one designation is given, regional and subregional descriptions are equivalent. Hydrogeologic units are shown in color only beneath water Fault—Dotted line delineates a zone between Carpetbag fault and Yucca fault that marks table buried trace of Tippinip fault (see text and plate 3) Alluvium / valley-fill aquifer—Dash pattern represents area in hydrogeologic section where fine-grained deposits act as local confining unit Water table Tertiary volcanic rock / volcanic-rock aquifer and confining unit (regional), and welded-tuff aquifer, lava-flow aquifer, and tuff confining unit (subregional) Recharge zone—Size of arrow is proportional to inferred amount of local recharge Dolomite and limestone (varied stratigraphic units; see text) / carbonate-rock aquifer (regional), and upper carbonate-rock aquifer (subregional) General direction of ground-water flow—Size of arrow indicates relative volume of ground-water flow. Multiple arrows indicate uncertain or multiple flow directions Siliceous siltstone, chert, sandstone, and cobble conglomerate (chiefly Mississippian) / Eleana confining unit Well or test hole Dolomite and limestone (Cambrian through Devonian) / carbonate-rock aquifer (regional), and lower carbonate-rock aquifer (subregional) Quartzite and siltstone (Late Eocambrian through Cambrian) / basement confining unit (regional), and quartzite confining unit (subregional) Geology by J.C. Cole and Mark R. Hudson, 1991 SECTIONS SHOWING MAJOR CONTROLS ON REGIONAL GROUND-WATER FLOW AT AND NEAR NEVADA TEST SITE, SOUTHERN NEVADA AND SOUTHEASTERN CALIFORNIA by Randell J. Laczniak, James C. Cole, David A. Sawyer, and Douglas A. Trudeau.
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