Filters: Tags: folding (geologic) (X)21 results (100ms)
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.
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...
Geologic map of the Cape Mendocino, Eureka, Garberville,and southwestern part of the Hayfork 30 X 60 Quadrangles and Adjacent OffshoreArea, Northern California
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.
The paper version of The geology of the Challis 1�x2� quadrangle, wascompiled by Fred Fisher, Dave McIntyre and Kate Johnson in 1992. Thegeology was compiled on a 1:250,000 scale topographic base map.TechniGraphic System, Inc. of Fort Collins Colorado digitized this mapunder contract for N.Shock. G.Green edited and prepared the Challisdigital version for publication as a geographic information systemdatabase. The digital geologic map database can be queried in manyways to produce a variety of geologic maps.
Geologic Map and Digital Database of the Upper Parashant Canyon andVicinity, Mohave County, Northwestern Arizona
This digital map database is compiled from unpublished data andnew mapping by the authors, represents the general distribution ofsurficial and bedrock geology in the mapped area. Together withthe accompanying pamphlet, it provides current information on thegeologic structure and stratigraphy of the area. The databasedilineate map units thatare identified by age and lithologyfollowing the stratigraphic nomenclature of the U.S. GeologicalSurvey. The scale of the source maps limits the spatialresolution of the database to 1:31,680 or smaller.
This quadrangle lies 6.4 km (4 mi) northeast of Bozeman, Mont., insouthwestern Montana. Metamorphic, sedimentary, and volcanic rocksof Precambrian to Tertiary age are exposed in the Bridger Range andsouthwestern margin of the Crazy Mountains Basin in a crustal crosssection and a structural triangle zone. Surface geology recordsPrecambrian extension, Late Paleocene east-vergent contraction,including backthrusts, and Holocene basin-range extension.
1:24,000-scale geologic mapping in the Clifton 7.5' quadrangle, insupport of the USGS Colorado River/I-70 Corridor Cooperative GeologicMapping Project, provides interpretations of the Quaternarystratigraphy and geologic hazards in this area of the Grand Valley.The Clifton 1:24,000 quadrangle is in Mesa County in westernColorado. Because the map area is dominated by various surficialdeposits, the map depicts 16 different Quaternary units. Fiveprominent river terraces are present in the quadrangle containinggravels deposited by the Colorado River. The map area contains alarge landslide deposit on the southern slopes of Mount Garfield.The landslide developed in the Mancos Shale and contains large blocksof the overlying...
Structural geologic orientation data for primarily Proterozoic aged rocks, eastern-central Rocky Mountain Front Range, Colorado
This data release consists of point data digitized from structural geologic orientation symbols consisting of mostly foliations and lineations. The data comes from primarily Proterozoic aged rocks in the eastern-central Rocky Mountain Front Range of Colorado. Compilation of the data is from twenty-three geologic maps published by the U.S. Geological Survey and the Colorado Geological Survey between 1964 and 2009, primarily using 7.5-minute, 1:24,000 scale quadrangles. Structural geologic orientation data of planar features (e.g., foliations) and linear features (e.g., fold axes), both with associated attribute values of strike and trend, dip and plunge, location, elevation, and geologic unit were captured for more...
Geologic and structure maps of the Kalispell 1:250,000quadrangle, Montana, and Alberta and British Columbia: adigital database.
This dataset was digitized by the U.S. Geological Survey EROSData Center and U.S. Geological Survey Spokane Field Officefor input into an Arc/Info geographic information systsem(GIS). The digital geologic map database can be queried inmany ways to produce a variety of derivative geologic maps.
The digital ARC/INFO databases included in this websiteprovide a GIS database for the geologic map of theDillon 1 degree by 2 degree quadrangle of southwestMontana and east-central Idaho. The geologic mapwas orginally published as U.S. Geological SurveyMiscellaneous Investigations Series Map I-1803-H.This website directory contains ARC/INFO format filesthat can be used to query or display the geology ofUSGS Map I-1803-H with GIS software.
This part of DS 781 presents fold data for the geologic and geomorphic map of the Monterey Canyon and Vicinity map area, California. The vector data file is included in "Folds_MontereyCanyon.zip," which is accessible from http://pubs.usgs.gov/ds/781/MontereyCanyon/data_catalog_MontereyCanyon.html. These data accompany the pamphlet and map sheets of Dartnell, P., Maier, K.L., Erdey, M.D., Dieter, B.E., Golden, N.E., Johnson, S.Y., Hartwell, S.R., Cochrane, G.R., Ritchie, A.C., Finlayson, D.P., Kvitek, R.G., Sliter, R.W., Greene, H.G., Davenport, C.W., Endris, C.A., and Krigsman, L.M. (P. Dartnell and S.A. Cochran, eds.), 2016, California State Waters Map Series—Monterey Canyon and Vicinity, California: U.S. Geological...
Geology and Resource Assessment of Costa Rica at 1:500,000 Scale--ADigital Representation of Maps of the U.S. Geological Survey's 1987Folio I-1865
In 1986 and 1987, the U.S. Geological Survey (USGS), the Direcci�nGeneral de Geolog�a, Minas e Hidrocarburos, and the Universidad deCosta Rica conducted a mineral-resource assessment of the Republicof Costa Rica. The results were published as a large 80- by 50-cmcolor folio (U.S. Geological Survey and others, 1987). The 75-pagedocument consists of maps as well as descriptive and interpretivetext in English and Spanish covering physiographic, geologic,geochemical, geophysical, and mineral site themes as well as amineral-resource assessment. The following maps are present in theoriginal folio:1) Physiographic base map at a scale of 1:500,000 with hypsography,place names, and drainage.2) Geologic map at a scale of...
The geology of the Eminence 7 1/2-minute quadrangle ,Shannon County, Missouri was mapped from 1996 through 1997as part of the Midcontinent Karst Systems and GeologicMapping Project, Eastern Earth Surface Processes Team. Themap supports the production of a geologic framework thatwill be used in hydrogeologic investigations related topotential lead and zinc mining in the Mark Twain NationalForest adjacent to the Ozark National Scenic Riverways(National Park Service). Digital geologic coverages will beused by other federal and state agencies in hydrogeologicanalyses of the Ozark karst system and in ecological models.
Geologic map and map database of the Oakland metropolitan area, Alameda, Contra Costa, and San Francisco Counties, California
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 (oakmf.ps,oakmf.pdf, oakmf.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 1:24,000 or smaller.
New 1:24,000-scale geologic mapping in the Silt 7.5' quadrangle,in support of the USGS Western Colorado I-70 Corridor CooperativeGeologic Mapping Project, provides new interpretations of thestratigraphy, structure, and geologic hazards in the area of thesouthwest flank of the White River uplift, the Grand Hogback, andthe eastern Piceance Basin.The Wasatch Formation was subdivided into three formal members,the Shire, Molina, and Atwell Gulch Members. Also a sandstoneunit within the Shire Member was broken out. The Mesaverde Groupconsists of the upper Williams Fork Formation and the lower IlesFormation. Members for the Iles Formation consist of the RollinsSandstone, the Cozzette Sandstone, and the Corcoran SandstoneMembers....
This part of DS 781 presents data for the folds of the Point Sur to Point Arguello, California, region. The vector data file is included in the “Folds_PointSurToPointArguello.zip,” which is accessible from https://doi.org/10.5066/P97CZ0T7. Folds in the Point Sur to Point Arguello region are identified on seismic-reflection data based on warping and tilting of reflections. Folds were primarily mapped by interpretation of seismic reflection profile data collected by the U.S. Geological Survey between 2008 and 2014 and interpretation of high-resolution bathymetry data.
This digital map database was compiled from previously published and unpublished data by the author and USGS colleagues, and from published maps by others, as indicated in figure 3 on the map sheet. A pamphlet included with the map provides a brief discussion of the geology of the quadrangle, a description of map units, and references cited.
Geologic map of the Ennis 30' X 60' quadrangle, Madison andGallatin Counties, Montana, and Park County, Wyoming
The Ennis 1:100,000 quadrangle lies within both the Laramide (LateCretaceous to early Tertiary) foreland province of southwesternMontana and the northeastern margin of the middle to late TertiaryBasin and Range province.The oldest rocks in the quadrangle are Archean high-grade gneiss, andgranitic to ultramafic intrusive rocks that are as old as about 3.0Ga. The gneiss includes a supracrustal assemblage of quartz-feldspargneiss, amphibolite, quartzite, and biotite schist and gneiss. Thebasement rocks are overlain by a platform sequence of sedimentaryrocks as old as Cambrian Flathead Quartzite and as young as UpperCretaceous Livingston Group sandstones, shales, and volcanic rocks.The Archean crystalline rocks crop...
This dataset was digitized by the U.S. Geological Survey EROSData Center and U.S. Geological Survey Spokane Field Officefor input into an Arc/Info geographic information systsem(GIS) The digital geologic map database can be queried inmany ways to produce a variety of derivative geologic maps.
Yucca Mountain, Nye County, Nevada, has been identified as a potential site for underground storage of high-level radioactive nuclear waste. Detailed bedrock geologic maps form an integral part of the site characterization program by providing the fundamental framework and structural setting for the area in and adjacent to the site of the potential repository.