The geologic map database was initially prepared from folded paper geologic maps (Drewes, 1980) by the staff at Optronics Specialty Co., Inc. Optronics scanned the geologic map and prepared minimally attributed ArcInfo exchange-format files. William N. Kelley and Steven R. Munts (contractors) georeferenced and transformed the data for Sheets 1 and 2 and completed the editing, data model preparation and attributing of arcs and polygons for the west sheet (Sheet 2). Robert A. Fields, Douglas M. Hirschberg (contractor) and Karen S. Bolm reviewed and edited the files for both sheets and developed additional spatial and attribute data. The manuscript and digital data were reviewed by Helen Kayser (contractor) and Pamela Derkey at the USGS Spokane office.
This digital geospatial database is one of many being created by the U.S. Geological Survey as an ongoing effort to provide geologic information in a geographic information system (GIS) for use in spatial analysis. The resulting digital geologic map database data can be queried in many ways to produce a variety of geologic maps and derivative products. This database should not be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000).
Are there legal restrictions on access or use of the data?
Use_Constraints:This digital database should not be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000).
Any hardcopies utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe on the hardcopy map the types of modifications they have performed. Users specifically agree not to misrepresent these datasets, nor to imply that changes they made were approved by the U.S. Geological Survey.
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 construe 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 GIS should not be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000).
|Data format:||Geologic units and structural features, with graphical images of the map sheet in PDF and JPG formats. in format ARCE (version 8.x) Size: 143|