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The paper version of the Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho was compiled by Anna Wilson and Betty Skipp in 1994. The geology was compiled on a 1:250,000 scale topographic base map. TechniGraphic System, Inc. of Fort Collins Colorado digitized this map under contract for N.Shock. G.Green edited and prepared the digital version for publication as a GIS database. The digital geologic map database can be queried in many ways to produce a variety of geologic maps.
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The Washington DC Area geologic map database (DCDB) provides geologic map information of areas to the NW, W, and SW of Washington, DC to various professionals and private citizens who have uses for geologic data. Digital, geographically referenced, geologic data is more versatile than traditional hard copy maps, and facilitates the examination of relationships between numerous aspects of the geology and other types of data such as: land-use data, vegetation characteristics, surface water flow and chemistry, and various types of remotely sensed images. The DCDB was created by combining Arc/Info coverages, designing a Microsoft (MS) Access database, and populating this database. Proposed improvements to the DCDB include...
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The Elsinore quadrangle is located in the northern part of the Peninsular Ranges Province and includes parts of two structural blocks, or structural subdivisions of the province. The active Elsinore Fault Zone diagonally crosses the southwest corner of the quadrangle, and is a major element of the right-lateral strike-slip San Andreas Fault system. The Elsinore Fault Zone separates the Santa Ana Mountains block west of the fault zone from the Perris block to the east. Internally both blocks are relatively stable and within the quadrangle are characterized by the presence of widespread erosional surfaces of low relief.Within the quadrangle the Santa Ana Mountains block is underlain by undifferentiated granitic rocks...
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The original time series and cross power data were stored in Binary format on 3.5" disks until further conversion was needed. To convert the time series and cross power data to a format that can be used for modeling, the original binary files were converted to ASCII format using Basic 4.0 code and associated subroutines (see Magnetotelluric_Original-Code_Binary-to-Ascii.txt and Magnetotelluric_Original-Code_Binary-to-Ascii-Subroutines.txt attached to the binary data ScienceBase item). The DaR project used these converted ASCII format files to create the EDI format files included in this data release. The binary data are considered the original data for the magnetotelluric survey, therefore, they are provided with...
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Hillshade of lidar-derived, bare earth digital elevation model, with 235-degree azimuth and 20-degree sun angle, 0.25m resolution, depicting earthquake effects following the August 24, 2014 South Napa Earthquake.
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This product is the result of a comprehensive compilation of site-specific ground photographs taken where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. The resultant data is distributed as collection of JPEG image files. All post-earthquake photographs taken by investigators working for public agencies are in the public domain, including data that have been published in summary reports elsewhere. These photographs are best viewed in context with fault rupture and other observations from the related KMZ file of summary field observations and photographs (https://www.sciencebase.gov/catalog/item/5c1d7ae0e4b0708288ca1322), or from the associated open-file...
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This product is the result of a comprehensive compilation of site-specific ground photographs taken where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. The resultant data is distributed as a tab-delimited text file. All post-earthquake photographs taken by investigators working for public agencies are in the public domain, including data that have been published in summary reports elsewhere.
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In March 2015, the U.S. Geological Survey acquired seismic reflection and refraction data along an approximately 2.8-km-long profile across northwest-trending San Andreas Fault splays located at the Dos Palmas Preserve east of Salton Sea. To acquire the reflection and refraction data, we collocated shots and geophones, spaced every 3 m along the profile. We used 933 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 925 P-wave shots. We generated P-wave data using one of two active sources: 400-grain Betsy-SeisgunTM shots at approximately every 90 m and a 3.5-kg sledgehammer and steel plate combination at every 3 m between the seisgun shots. All data...
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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 publication addresses deep-seated landslide susceptibility,debris flow susceptibility, and other geologic hazards in ruralparts of western San Mateo County. The report also estimatespossible costs of investigating and mitigating the landslidehazards. The study area includes the Half Moon Bay 7.5'quadrangle, the Montara Mountain 7.5' quadrangle, and thePescadero/Butano Creeks watershed. Hazard maps were derived byintegrating slope data and previous geologic, landslide and debrisflow mapping. The digital database, which is found athttp://geopubs.wr.usgs.gov/open-file/of00-127includes 43 plotfiles for slope maps, Digital Orthophoto Quadranglemaps, Digital Raster Graphic topographic base maps, geologic maps,deep-seated...
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Collection of low sun angle hillshade images of lidar-derived, bare earth digital elevation models, 0.25m resolution, that depict fault rupture and ground deformation features, collected following the August 24, 2014 South Napa Earthquake.
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In April 2017, the U.S. Geological Survey acquired high resolution P- and S-wave seismic data across the suspected trace of the West Napa Fault zone in St. Helena, California. We acquired seismic reflection, refraction, and guided-wave data along a 215-m-long profile across the expected trend of the West Napa Fault zone. To acquire the reflection and refraction data, we co-located shots and geophones, spaced every 2 m along the profile. We used 109 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 108 P-wave shots, and 109 SercelTM L28-LBH S-wave (4.5-Hz horizontal-component) geophones with a sensitivity of 31.3 volts/meter/second to record 108 S-wave...
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Linework representing fault rupture and ground deformation features interpreted from airborne imagery, lidar, and InSAR interferograms, are combined with digitized field mapping into a single KMZ file.
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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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This digital geologic map compilation presents new polygon(i.e., geologic map unit contacts), line (i.e., fault, foldaxis, and structure contour), and point (i.e., structuralattitude, contact elevations) vector data for the Jasper 7 1/2'quadrangle in northern Arkansas. The map database, which is at1:24,000-scale resolution, provides geologic coverage of anarea of current hydrogeologic, tectonic, and stratigraphicinterest. The Jasper quadrangle is located in northern Newtonand southern Boone Counties about 20 km south of the town ofHarrison. The map area is underlain by sedimentary rocks ofOrdovician, Mississippian, and Pennsylvanian age that weremildly deformed by a series of normal and strike-slip faults andfolds....
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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 the mappedarea. Together with the accompanying text file (pamf.ps, pamf.pdf,pamf.txt), it provides current information on the geologic structureand stratigraphy of the area covered. The database delineates mapunits that are identified by general age and lithology following thestratigraphic nomenclature of the U.S. Geological Survey. The scaleof the source maps limits the spatial resolution (scale) of thedatabase to 1:62,500 or smaller.
Tags: 06081 = San Mateo, 06085 = Santa Clara, 06087 = Santa Cruz, 1100 - Geology, 1101 - General, 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 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 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 (scvmf.ps, scvmf.pdf, scvmf.txt), it provides currentinformation on the geologic structure and stratigraphy of thearea covered. The database delineates map units that areidentified 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 1:24,000 or smaller.
Tags: 06085 = Santa Clara, 06087 = Santa Cruz, Aldercroft fault, Ben Lomond fault block, Berrocal fault, All tags...


map background search result map search result map Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana Geologic map and map database of the Palo Alto 30' X 60' quadrangle, California 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 Jasper quadrangle, Newton and BooneCounties, Arkansas Geologic maps and structure sections of the southwestern SantaClara Valley and southern Santa Cruz Mountains, Santa Clara andSanta Cruz Counties, California Geologic map of the Vail East quadrangle, Eagle County, Colorado 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 Possible Costs Associated with Investigating and Mitigating SomeGeologic Hazards in Rural Parts of San Mateo County, California Geologic Map Database of the Washington DC Area Featuring Data From Three 30 X 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg Preliminary geologic map of the Elsinore 7.5' quadrangle, Riverside County, California Photographs of fault rupture and ground deformation features produced by the Mw 6.0 South Napa earthquake of August 24, 2014 Airborne Lidar Hillshade Images Depicting Fault Rupture Produced by the Mw 6.0 South Napa Earthquake Hillshade raster (235-degree azimuth, 20-degree sun angle) derived from lidar data collected after the August 24, 2014 South Napa earthquake Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990: Binary Data 2017 seismic imaging of the West Napa Fault Zone, St. Helena, California 2015 high resolution seismic acquisition at Dos Palmas Preserve, Mecca, California KMZ file of fault rupture and ground deformation features produced by the Mw 6.0 South Napa Earthquake of August 24, 2014 Table of photograph metadata and links to full-resolution photographs taken at observation stations by post-earthquake reconnaissance teams, Mw 6.0 South Napa Earthquake of August 24, 2014 2015 high resolution seismic acquisition at Dos Palmas Preserve, Mecca, California Geologic Map of the Hogback Mountain Quadrangle, Lewis and Clark and Meagher Counties, Montana Geologic map of the Jasper quadrangle, Newton and BooneCounties, Arkansas Geologic map of the Vail East quadrangle, Eagle County, Colorado Preliminary geologic map of the Elsinore 7.5' quadrangle, Riverside County, California Geologic map and map database of the Spreckels 7.5-minutequadrangle, Monterey County, California KMZ file of fault rupture and ground deformation features produced by the Mw 6.0 South Napa Earthquake of August 24, 2014 Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990: Binary Data 2017 seismic imaging of the West Napa Fault Zone, St. Helena, California Geologic maps and structure sections of the southwestern SantaClara Valley and southern Santa Cruz Mountains, Santa Clara andSanta Cruz Counties, California Possible Costs Associated with Investigating and Mitigating SomeGeologic Hazards in Rural Parts of San Mateo County, California Geologic map and map database of the Palo Alto 30' X 60' quadrangle, California 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 Geologic Map Database of the Washington DC Area Featuring Data From Three 30 X 60 Minute Quadrangles: Frederick, Washington West, and Fredericksburg 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 of the eastern part of the Challis National Forest and vicinity, Idaho