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The geologic map of the central Marysvale volcanic field, southwestern Utah, shows the geology at 1:100,000 scale of the heart of one of the largest Cenozoic volcanic fields in the Western United States. The map shows the area of 38 degrees 15' to 38 degrees 42'30" N., and 112 degrees to 112 degrees 37'30" W. The Marysvale field occurs mostly in the High Plateaus, a subprovince of the Colorado Plateau and structurally a transition zone between the complexly deformed Great Basin to the west and the stable, little-deformed main part of the Colorado Plateau to the east. The western part of the field is in the Great Basin proper. The volcanic rocks and their source intrusions in the volcanic field range in age from...
Tags: 49001 = Beaver, 49027 = Millard, 49031 = Piute, 49041 = Sevier, Annabella, All tags...
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The Eagle quadrangle covers an area that straddles the Eagle River and Interstate 70 (I-70) and it includes the town of Eagle, Colo., which is located in the southwestern part of the quadrangle, just south of I-70 and the Eagle River, about 37 km west of Vail, Colo. The map area is part of the I-70 urban corridor, which is experiencing rapid and escalating urban growth. Geologic mapping along this corridor is needed for ongoing land-use planning. A variety of rocks and deposits characterize the map area and areas nearby. Sedimentary rocks present in the map area range in age from Pennsylvanian rocks, which were deposited in the ancestral Eagle basin during the formation of the ancestral Rocky Mountains, to Late...
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Thirty-nine types of surficial geologic deposits and residualmaterials of Quaternary age are described and mapped in the greaterDenver area, in part of the Front Range, and in the piedmont andplains east of Denver, Boulder, and Castle Rock. Descriptionsappear in the pamphlet that accompanies the map. Landslidedeposits, colluvium, residuum, alluvium, and other deposits ormaterials are described in terms of predominant grain size, mineralor rock composition (e.g., gypsiferous, calcareous, granitic,andesitic), thickness of deposits, and other physicalcharacteristics. Origins and ages of the deposits and geologichazards related to them are noted. Many lines between geologicunits on our map were placed by generalizing...
Tags: 08001 = Adams, 08005 = Arapahoe, 08013 = Boulder, 08019 = Clear Creek, 08031 = Denver, All tags...
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This new 1:24,000-scale geologic map of the Vail West 7.5' quadrangle, as part of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area on the southwest flank of the Gore Range.Bedrock strata include Miocene tuffaceous sedimentary rocks, Mesozoic and upper Paleozoic sedimentary rocks, and undivided Early(?) Proterozoic metasedimentary and igneous rocks. Tuffaceous rocks are found in fault-tilted blocks. Only small outliers of the Dakota Sandstone, Morrison Formation, Entrada Sandstone, and Chinle Formation exist above the redbeds of the Permian-Pennsylvanian Maroon Formation and Pennsylvanian Minturn...
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This product consists of Adobe Acrobat .PDF format documents for 10surficial geologic strip maps along the Animas River watershed from itsmajor headwater tributaries, south to Durango, Colo. The Animas Riveroriginates in the San Juan Mountains north of the historic mining townof Silverton, Colo. The surficial geologic maps identify surficialdeposits, such as floodplain, and terrace gravels, alluvial fans,glacial till, talus, colluvium, landslides, and bogs. Sixteen primaryunits were mapped that included human-related deposits and structures,eight alluvial deposits, four colluvial deposits, one glacial deposit,one travertine deposit, and undifferentiated bedrock. Each of thesurficial geologic strip maps has .PDF...
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Yucca Mountain, Nye County, Nevada, has been identified as apotential site for underground storage of high-levelradioactive waste. This geologic map compilation, includingall of Yucca Mountain and Crater Flat, most of the CalicoHills, western Jackass Flats, Little Skull Mountain, theStriped Hills, the Skeleton Hills, and the northeasternAmargosa Desert, portrays the geologic framework for asaturated-zone hydrologic flow model of the Yucca Mountainsite. Key geologic features shown on the geologic map andaccompanying cross sections include: (1) exposures ofProterozoic through Devonian strata inferred to have beendeformed by regional thrust faulting and folding, in theSkeleton Hills, Striped Hills, and Amargosa Desert...
Tags: 32023 = Nye, Amargosa Desert, Beatty Wash, Belted Range thrust, Black Marble, All tags...
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Fifty-three types of surficial geologic deposits and residual materials of Quaternary age are described in a pamphlet and located on a map of the greater Pueblo area, in part of the Front Range, in the Wet and Sangre de Cristo Mountains, and on the plains east of Colorado Springs and Pueblo. Deposits formed by landslides, wind, and glaciers, as well as colluvium, residuum, alluvium, and others are described in terms of predominant grain size, mineral or rock composition (e.g., gypsiferous, calcareous, granitic, andesitic), thickness, and other physical characteristics. Origins and ages of the deposits and geologic hazards related to them are noted. Many lines drawn between units on our map were placed by generalizing...
Tags: 08025 = Crowley, 08027 = Custer, 08035 = Douglas, 08039 = Elbert, 08041 = El Paso, All tags...


    map background search result map search result map Surficial geologic maps along the riparian zone of the Animas Riverand its headwater tributaries, Silverton to Durango, Colorado, withupper Animas River watershed gradient profiles Geologic Map of the Tularosa Mountains 30� � 60� Quadrangle, Catron County, New Mexico Geologic Map of the Central Marysvale Volcanic Field, Southwestern Utah Geologic map of the Yucca Mountain region, Nye County, Nevada Generalized Surficial Geologic Map of the Denver 1�x2� Quadrangle, Colorado Geologic map of the Eagle quadrangle, Eagle County, Colorado Geologic Map of the Vail West quadrangle, Eagle County, Colorado Generalized Geologic Map of the Upper Animas River Watershed and Vicinity, Silverton, Colorado Generalized Surficial Geologic Map of the Pueblo 1� x 2� Quadrangle, Colorado Geologic map of the Eagle quadrangle, Eagle County, Colorado Geologic Map of the Vail West quadrangle, Eagle County, Colorado Generalized Geologic Map of the Upper Animas River Watershed and Vicinity, Silverton, Colorado Geologic map of the Yucca Mountain region, Nye County, Nevada Surficial geologic maps along the riparian zone of the Animas Riverand its headwater tributaries, Silverton to Durango, Colorado, withupper Animas River watershed gradient profiles Geologic Map of the Central Marysvale Volcanic Field, Southwestern Utah Geologic Map of the Tularosa Mountains 30� � 60� Quadrangle, Catron County, New Mexico Generalized Surficial Geologic Map of the Denver 1�x2� Quadrangle, Colorado Generalized Surficial Geologic Map of the Pueblo 1� x 2� Quadrangle, Colorado