USGS Geoscience Data Catalog
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Wilson, A.B., and Skipp, Betty, 1994, Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-2395, U.S. Geological Survey, Denver, Colorado.
This is a vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 1
Ordinates (y-coordinates) are specified to the nearest 1
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
|Qs||Surficial deposits (Quaternary)|
|QTs||Surficial deposits (Quaternary and Tertiary)|
|Ts||Sedimentary rocks and tuff (Tertiary)|
|Te||Extrusive rocks (Tertiary)|
|Ti||Intrusive rocks (Tertiary)|
|PIPw||Wood River Formation of the Sun Valley Group (Lower Permian to Middle Pennsylvanian)|
|PMc||Mixed carbonate and siliciclastic rocks (Lower Permian to Upper Mississippian)|
|Mc||Copper Basin Formation (Upper and Lower Mississippian)|
|Mw||White Knob Limestone (Upper Mississippian)|
|Mcb||Carbonate bank units (Upper Mississippian)|
|Mm||McGowan Creek Formation (Lower Mississippian)|
|Dm||Milligen Formation (Devonian)|
|Dc||Carbonate rocks (Devonian)|
|DOs||Argillite and siltstone (Devonian to Ordovician)|
|DSOc||Carbonate rocks (Devonian to Ordovician)|
|DOc||Carbonate rocks (Lower Devonian to Ordovician)|
|Ok||Kinnikinic Quartzite (Middle Ordovician)|
|Os||Summerhouse Formation (Lower Ordovician)|
|Oe||Ella Dolomite (Middle Ordovician)|
|Oc||Clayton Mine Quartzite (Ordovician or older)|
|OZq||Quartzitic rocks (Ordovician to Late Proterozoic)|
|Ym||Metasedimentary rocks (Middle Proterozoic)|
|XAg||Gneissic rocks (Early Proterozoic to Archean(?))|
|certain||Boundary between two mapped units that was observed|
|inferred||Boundary between two mapped unit was inferred|
|colorbound||Edge of geologic map|
|contact||Geological boundary between two map units|
|neatline||Different type of edge of geologic map|
|concealed||Fault that is concealed and its position inferred|
|inferred||Fault whose position is inferred|
|high-angle||High-angle normal faults - Dashed where approximately located; dotted where concealed. Bar and ball on downthrown side where sense of movement is known|
|includes detachment||Detachment of large rock from rock slides.|
|low-angle normal||Low-angle normal fault - Hachures on over-rinding block|
|strike-slip||Strike-slip fault showing relative horizontal movement|
|thrust||Thrust Fault - Sawteeth on over-rinding block|
|rock silde||Outlines large sheets of mostly brecciated limestone emplaced by gravity. Includes detachment faults of Beutner (1968).|
Wilson and Skipp compiled the geology onto stable-base material at a scale of 1:250,000. That version was published as USGS publication MAP I-2395. TechniGraphic System, Inc. of Fort Collins Colorado digitized that map for the USGS in 1999 under contract for N.Shock (USGS). G.Green (USGS) edited and prepared for digital release the Arc/Info databases. The files are stored in the following projection; UTM, meters, zone 11, NAD27, Clarke 1866
(303) 236-5390 (voice)
This dataset was developed to provide a geologic map GIS database of Challis National Forest, Idaho for use in spatial analysis by a variety of users.
Wilson, Anna B., and Skipp, Betty, 1994, Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-2395, U.S. Geological Survey, Denver, Colorado, USA.
Person who carried out this activity:
(303) 236-5390 (voice)
manual check against orginals
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1-888-ASK-USGS (1-888-275-8747) (voice)
U.S. Geological Survey Miscellaneous Investigations Series Map I-2395
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) editorial standard nor with the North American stratigraphic codes. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:250,000.
|Data format:||Geologic Map of the eastern part of the Challis National Forest and vicinity, Idaho in format TAR file containing all database ARC/INFO export files (version ARC/INFO version 7.1.2) Size: 14 Mb|