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The geologic map of the Hogback Mountain quadrangle, scale 1:24,000, was made as part of the Montana Investigations Project to provide new information on the stratigraphy, structure, and geologic history of an area in the geologically complex southern part of the Montana disturbed belt. In the Hogback Mountain area, rocks ranging in age from Middle Proterozoic through Cretaceous are strongly folded within and under thrust plates of equivalent rocks. Continental rocks of successive thrust plates have been telescoped eastward over a buttress of the stable continent. Erosional remnants of Oligocene andesitic basalt lie on highest surfaces eroded across the strongly deformed older rocks; younger erosion has dissected...
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This digital map database, compiled from previously publishedand unpublished data, and new mapping by the authors,represents the general distribution of bedrock and surficialdeposits in the mapped area. Together with the accompanyingtext file (nesfmf.ps, nesfmf.pdf, nesfmf.txt), it providescurrent information on the geologic structure and stratigraphyof the area covered. The database delineates map units thatare identified by general age and lithology following thestratigraphic nomenclature of the U.S. Geological Survey. Thescale of the source maps limits the spatial resolution (scale)of the database to 1:62,500 or smaller.
Tags: 06013 = Contra Costa, 06041 = Marin, 06055 = Napa, 06067 = Sacramento, 06077 = San Joaquin, All tags...
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This digital map database, compiled from previously published andunpublished data, and new mapping by the authors, represents thegeneral distribution of bedrock and surficial deposits in the mapped area.Together with the accompanying text file (skmf.txt, skmf.pdf, orskmf.ps), it provides current information on the geologic structure andstratigraphy of the area covered. The database delineates map units thatare identified by general age and lithology following the stratigraphicnomenclature of the U.S. Geological Survey. The scale of the source mapslimits the spatial resolution (scale) of the database to 1:24,000 orsmaller.
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New 1:24,000-scale geologic mapping along the Interstate-70urban corridor in western Colorado, in support of the State/USGS Cooperative Geologic Mapping Project, is contributing to amore complete understanding of the stratigraphy, structure,tectonic evolution, and hazard potential of this rapidlydeveloping region. The 1:24,000-scale Vail East quadranglestraddles the Gore fault system, the western structuralboundary of the Gore Range. The Gore fault system is acontractional structure that has been recurrently active sinceat least the early Paleozoic and marks the approximate easternboundary of the Central Colorado trough, a thick late Paleozoicdepocenter into which thousands of meters of clastic sedimentwere deposited...
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This digital map database, compiled from previously published andunpublished data, and new mapping by the authors, represents thegeneral distribution of bedrock and surficial deposits in themapped area. Together with the accompanying text file (ceghmf.ps,ceghmf.pdf, ceghmf.txt), it provides current information on thegeologic structure and stratigraphy of the area covered. Thedatabase delineates map units that are identified by general ageand lithology following the stratigraphic nomenclature of the U.S.Geological Survey. The scale of the source maps limits the spatialresolution (scale) of the database to 1:100,000 or smaller.
Tags: 06023 = Humboldt, 06045 = Mendocino, 06103 = Tehama, 06105 = Trinity, Bear River fault zone, All tags...
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This Data Release provides tabular and geospatial data digitized by the U.S. Geological Survey (USGS) from a U.S. Bureau of Mines (USBoM) report titled Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado. The original preliminary paper report, numbered Mineral Land Assessment 65-83 (MLA 65-83; Ellis and others, 1983), presented the results of a mineral resource potential survey of areas in and around the Sangre de Cristo Range flanking the northeastern extent of San Luis Valley in south-central Colorado. Included in this Data Release are georeferenced scans of the regional plate maps, digitized sample site locations, analytical...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alamosa County, Alamosa County, Baca National Wildlife Refuge, Blanca Peak, Cañon City, All tags...
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This dataset contains a provisional release of field observations at sites of fault rupture and ground deformation features where quantitative displacement measurements were obtained. This release does not include associated photographs and some observations where there are outstanding questions about the measurements received; some duplicate observations may exist in this dataset. Photos and resolved measurement data are anticipated for a future release. This dataset consists of a comma-delimited ASCII text file where each line in the file represents an observation, suitable for importing into a spreadsheet, database or GIS application for visualization and analysis. These data are also summarized in a companion...
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This release provides the data for a comprehensive survey of geologic structures in the eastern Española Basin of the Rio Grande rift, New Mexico. The release includes data and analyses from 53 individual fault zones and 22 other brittle structures, such as breccia zones, joints, and veins, investigated at a total of just over 100 sites. Structures were examined and compared from poorly lithified Tertiary sediments, as well as Paleozoic sedimentary and Proterozoic crystalline rocks. Data and analyses, include geologic maps; field observations and measurements; orientation, kinematic paleostress analyses and modeling; statistical examination of 575 fault trace lengths derived from aeromagnetic data in the Española...
Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CGGSC, Crustal Geophysics and Geochemistry Science Center, Deformation (geologic), Faulting (geologic), Fracture (geologic), All tags...
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This digital geologic and tectonic database of the Death Valley ground-water model area, as well as its accompanying geophysical maps, are compiled at 1:250,000 scale. The map compilation presents new polygon, line, and point vector data for the Death Valley region. The map area is enclosed within a 3 degree X 3 degree area along the border of southern Nevada and southeastern California. In addition to the Death Valley National Park and Death Valley-Furnace Creek fault systems, the map area includes the Nevada Test Site, the southwest Nevada volcanic field, the southern end of the Walker Lane (from southern Esmeralda County, Nevada, to the Las Vegas Valley shear zone and Stateline fault system in Clark County, Nevada),...
Tags: 06027 = Inyo, 06071 = San Bernardino, 32003 = Clark, 32009 = Esmeralda, 32017 = Lincoln, All tags...
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Forty years of geologic investigations at the Nevada Test Site (NTS)have been digitized. These data include all geologic information that:(1) has been collected, and(2) can be represented on a map within the map borders at the mapscale is included in the map digital coverages.
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The area of study for this report is the southern portion of SantaClara County that lies within the Monterey 30 by 60 minutequadrangle, consisting of parts of the Watsonville East, Chittenden,San Felipe, Three Sisters, and Mariposa Peak 7.5 minutequadrangles. The study involved combining compilation of previouspublished and unpublished work in the area with new mappingcompleted in the first half of 1997. The study area makes up atransect of the central California Coast Ranges, starting just eastof the San Andreas fault and continuing east across the Santa CruzMountains, the Santa Clara Valley, and into the heart of the DiabloRange. The area includes five fault-bounded structural blocks, eachcontaining a distinct...
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The San Jose 30 x 60-minute quadrangle straddles the CaliforniaCoast Ranges southeast of San Francisco, and extends from west ofthe San Andreas fault near Santa Cruz on the southwest (long. -122�,lat. 37�) to the San Joaquin River in the Central Valley on thenortheast (long. -121�, lat. 37.5�). The map is a new geologiccompilation that is based on extensive previous work by many authorsand a great deal of new mapping, largely at 1:24,000, much of whichis previously unpublished.This report presents the preliminary geologic map of the San Jose 30x 60-minute quadrangle at a scale of 1:100,000, and consists of aspatial database of nine layers, two colored map sheets (geologicmap and correlation diagram), and a descriptive...
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A spatial database was created for the Drewes (1980) tectonic map of southeast Arizona: this database supercedes Drewes and others (2001, ver. 1.0). The west tectonic map (Drewes, 1980) was converted to digital format by Optronics Specialty Co., Inc. and published in 2001. Staff and a contractor at the U.S. Geological Survey in Tucson, Arizona developed a digital geologic map database for the east map in 2001, made revisions to the previously released digital data for the west map (Drewes and others, 2001, ver. 1.0), merged data files for the east and west sheets, and added additional data not previously captured.
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This item contains linework that represents fault rupture and ground deformation features interpreted from field-based maps and observations, as well as airborne imagery, lidar, and geodetic imagery products. Provisional maps of fault rupture and ground deformation are composed of a “mashup” of linework from these various sources, obtained and compiled as of December, 2019. If more than one linework representation exists for a segment of the fault rupture, linework showing the most rupture detail or best location accuracy, based on the judgment of the compiler, is preserved. On provisional maps, less than 25% of the linework is derived from high-resolution optical imagery and detailed field mapping. Because line...
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The data on this CD consist of geographic information system (GIS)coverages and tabular data on the geology of Early Proterozoic andArchean rocks in part of the Early Proterozoic Penokean orogeny.The map emphasizes metasedimentary and metavolcanic rocks that weredeposited along the southern margin of the Superior craton and werelater deformed during continental collision at about 1850 Ma. Thearea includes the famous iron ranges of the south shore region ofthe Lake Superior district. Base maps, both as digital rastergraphics (DRG) and digital line graphs (DLG) are also provided forthe convenience of users. The map has been compiled from manyindividual studies, mostly by USGS researchers, completed during thepast...
Tags: 1100 - Geology, 1101 - General, 26003 = Alger, 26013 = Baraga, 26043 = Dickinson, All tags...
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The Rio Puerco quadrangle is located southwest of Albuquerque in centralNew Mexico and covers part of the western part of the Isleta Reservation.The U.S. Geological Survey, the New Mexico Bureau of Geology and MineralResources, and the University of New Mexico have conducted geologicmapping on the Isleta Reservation and vicinity as part of the Middle RioGrande Basin Project. The map area contains surficial deposits, calcicsoils, fluvial deposits of the Rio Puerco, deposits of the Santa Fe Group,and three volcanic fields. The area is characterized by predominantlynorth-trending normal faults with generally down-to-the-east movement.Post-Santa Fe Group deposits are composed of surficial deposits(Pleistocene-Holocene)...
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This digital geologic and tectonic database of the Death Valley ground-water model area, as well as its accompanying geophysical maps, are compiled at 1:250,000 scale. The map compilation presents new polygon, line, and point vector data for the Death Valley region. The map area is enclosed within a 3 degree X 3 degree area along the border of southern Nevada and southeastern California. In addition to the Death Valley National Park and Death Valley-Furnace Creek fault systems, the map area includes the Nevada Test Site, the southwest Nevada volcanic field, the southern end of the Walker Lane (from southern Esmeralda County, Nevada, to the Las Vegas Valley shear zone and Stateline fault system in Clark County, Nevada),...
Tags: 06027 = Inyo, 06071 = San Bernardino, 32003 = Clark, 32009 = Esmeralda, 32017 = Lincoln, All tags...
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This product is a collection of digital data that document fault rupture and ground-deformation features produced by the Ridgecrest M6.4 and M7.1 earthquake sequence of July 4 and 5, 2019. These datasets are described and more fully discussed in Ponti and others (2020) (see External Resources Section below for the full reference). Included in this collection are: GIS Shapefile and KMZ file of field-verified fault rupture and ground deformation features from direct field mapping, or interpreted from ground observations, airborne and satellite optical imagery, digital surface models derived from lidar and structure-from-motion optical image analysis, sub-pixel correlation of multi-temporal optical imagery, and phase...
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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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This map of selected post-Nevadan features is in a sensesupplementary to Map I-2148 (Geologic map of the Klamath Mountains,compiled by W.P. Irwin, 1994). The map of selected post-Nevadangeologic features is in large part a compilation of the publishedwork of many geologists (see Fig. 1--Index map showing sources ofdata). The principal focus of Map I-2148 concerned the assemblageof terranes that constitute the principal bedrock of the KlamathMountains. The terranes of the Klamath Mountains variously consistof rocks that range from Cambrian to Late Jurassic and perhaps evenearliest Cretaceous age. All of these terranes have been subjectedto episodes of metamorphism, plutonism, and tectonism, including amajor widespread...


    map background search result map search result map Spatial Digital Database for the Tectonic Map of Southeast Arizona Geologic map of the Yucca Mountain region, Nye County, Nevada Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana Geologic map of the Cape Mendocino, Eureka, Garberville,and southwestern part of the Hayfork 30 X 60 Quadrangles and Adjacent OffshoreArea, Northern California Geologic map and map database of the Spreckels 7.5-minutequadrangle, Monterey County, California Geologic map of the Vail East quadrangle, Eagle County, Colorado Geologic Map of the Death Valley Ground-Water Model Area, Nevada and California Tectonic Map of the Death Valley Ground-Water Model Area, Nevada and California Geologic map of the Rio Puerco quadrangle, Bernalillo and ValenciaCounties, New Mexico Geologic map and map database of northeastern San Francisco Bay region, California; Most of Solano County and parts of Napa, Marin, Contra Costa, San Joaquin, Sacramento, Yolo, and Sonoma Counties Digital Geologic Map Database of the Nevada Test Site Area, Nevada Preliminary map of selected post-Nevadan geologic features of the Klamath Mountains and adjacent areas, California and Oregon: A digital database Geology of the southernmost part of Santa Clara County, California: A digital database Preliminary Geologic Description of the San Jose 30 X 60 Minute Quadrangle, California: A Digital Database Digital Geologic Map of the Penokean Continental Margin, Northern Michigan and Wisconsin Data for a Comprehensive Survey of Fault Zones, Breccias, and Fractures in and Flanking the Eastern Española Basin, Rio Grande Rift, New Mexico Digital Datasets Documenting Surface Fault Rupture and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019 Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA Fault Rupture and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019: Provisional Release 1 Field Observations With Quantitative Displacement Measurements Obtained From Surface Faulting and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019: Provisional Release 1 Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana Geologic map of the Vail East quadrangle, Eagle County, Colorado Geologic map of the Rio Puerco quadrangle, Bernalillo and ValenciaCounties, New Mexico Geologic map and map database of the Spreckels 7.5-minutequadrangle, Monterey County, California Geology of the southernmost part of Santa Clara County, California: A digital database Geologic map of the Yucca Mountain region, Nye County, Nevada Field Observations With Quantitative Displacement Measurements Obtained From Surface Faulting and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019: Provisional Release 1 Fault Rupture and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019: Provisional Release 1 Digital Datasets Documenting Surface Fault Rupture and Ground Deformation Features Produced by the Ridgecrest M6.4 and M7.1 Earthquake Sequence of July 4 and 5, 2019 Preliminary Geologic Description of the San Jose 30 X 60 Minute Quadrangle, California: A Digital Database Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA Geologic map and map database of northeastern San Francisco Bay region, California; Most of Solano County and parts of Napa, Marin, Contra Costa, San Joaquin, Sacramento, Yolo, and Sonoma Counties Digital Geologic Map Database of the Nevada Test Site Area, Nevada Geologic map of the Cape Mendocino, Eureka, Garberville,and southwestern part of the Hayfork 30 X 60 Quadrangles and Adjacent OffshoreArea, Northern California Spatial Digital Database for the Tectonic Map of Southeast Arizona Data for a Comprehensive Survey of Fault Zones, Breccias, and Fractures in and Flanking the Eastern Española Basin, Rio Grande Rift, New Mexico Digital Geologic Map of the Penokean Continental Margin, Northern Michigan and Wisconsin Preliminary map of selected post-Nevadan geologic features of the Klamath Mountains and adjacent areas, California and Oregon: A digital database Geologic Map of the Death Valley Ground-Water Model Area, Nevada and California Tectonic Map of the Death Valley Ground-Water Model Area, Nevada and California