Larsen, J.C., Assmus, K.C., Causey, J.D., and Zientek, M.L., 2004, Rectified images of selected geologic maps of the northern Rockies area, Idaho, Montana, Washington, and Wyoming: U.S. Geological Survey Data Series DS 106, U.S. Geological Survey, Menlo Park, CA.
This is a Raster data set. It contains the following raster data types:
Planar coordinates are encoded using row and column
Abscissae (x-coordinates) are specified to the nearest 8.769702
Ordinates (y-coordinates) are specified to the nearest 8.769702
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 6378206.400000.
The flattening of the ellipsoid used is 1/294.978698.
Sequential unique whole numbers that are automatically generated.
Sequential unique whole numbers that are automatically generated.
Sequential unique whole numbers that are automatically generated.
N/A
Michael L. Zientek
U.S. Geological Survey
Geologist
904 W. Riverside, Room 202
Spokane, WA 99201-1087
(509) 368-3105 (voice)
mzientek@usgs.gov
This rectified image was created to allow the direct comparison of a published geologic map with other geospatial information in a geographic information system. The rectified image can be compared to vector representations of the same map to ensure that features are coded correctly and that all geologic information on the published map was captured in the vector files. The image also quickly illustrates how the author intended to symbolize the map.
Carrara, P.E., 1990, Surficial geological map of Glacier National Park, Montana: U.S. Geological Survey Miscellaneous Investigations Series Map I-1508-D, U.S. Geological Survey, Reston, VA.
Data sources used in this process:
Data sources produced in this process:
GlacierNP_surf_rect.sid was tested to ensure it was projected and georeferenced properly by overlying it with a latitude and longitude tic points coverage (tic120602utm) that was mathematically generated using ARC/INFO. At the scale of publication, reference points on image coincided with corresponding reference points of the tic file.
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The title, text, explanation, cross section, index maps and collar information of the original data source map are cropped or partially cropped in the georeferenced MrSID image.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- This digital image is not meant to be used or displayed at any scale larger than 1:100,000 (for example, 1:2,000).
U.S. Geological Survey, Spokane Field Office
c/o Michael L. Zientek
904 W. Riverside, Room 202
Spokane, WA 99201-1087
(509) 368-3105 (voice)
mzientek@usgs.gov
DS 106
The U.S. Geological Survey (USGS) provides these geographic data "as is". The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS.This digital geologic map image is not meant to be used or displayed at any scale larger than 1:100,000 (for example, 1:2,000).
Data format: | MrSID (version 1.4) The SID file contains the image data. The SDW file contains the world file. The AUX file contains auxiliary information such as map projection, pointer to pyramid file, etc. The XML file contains the metadata describing the data set <data set name>.sid.xml. Size: 31.783 |
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N/A
Software that supports MrSID image format is required to use this data.
Jeremy C. Larsen
Information Systems Support (under contract to the U.S. Geological Survey)
Contractor
904 W. Riverside, Room 202
Spokane, WA 99201
(509) 368-3118 (voice)
jlarsen@usgs.gov