D.M. Hirschberg (contractor), G.S. Pitts (contractor), and K.S. Bolm (USGS), scanned Dickinson's (1992) geologic map; registered the resulting image; digitized the arcs and points; captured and positioned the annotation, attributed the arcs, polygons, and points; defined and populated the look-up tables; prepared the data model; wrote the metadata; and produced the Open-File Report text. See the Process_Step sections for more details on these steps.
This database was constructed to provide a geologic map GIS for use in spatial analysis by a variety of users. The digital geologic database can be queried in many ways to produce a variety of derivative geologic maps. The data are not meant to be used 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 is not meant to 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 agrees 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 geograpic 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 spatial digital database for the geologic map of Catalina Core Complex and San Pedro Trough is not meant to be used or displayed at any scale larger than 1:125,000 (for example, 1:100,000 or 1:24,000).
|Geologic units, structural features, point measures in format ARCE (version 8.x) Size: 1.3