Database for the Geologic Map of Upper Eocene to Holocene Volcanic and Related Rocks in the Cascade Range, Washington
By Andrew D. Barron, David W. Ramsey, and James G. Smith
Database for Miscellaneous Investigations Series Map I-2005
This digital database was originally compiled in ArcInfo coverage format. The database was upgraded for this release to ArcGIS 9.3.1 personal geodatabase format and consists of geologic map feature classes for Sheet 1 from U.S. Geological Survey Miscellaneous Investigations Series Map I-2005. ArcGIS-compatible GIS software is therefore required to use the files of this database. The geodatabase is stored in a single zipped folder (DS-842.zip) in this release for ease of transfer. The scale of the source mapping limits the spatial resolution of the database to 1:250,000 scale or less detailed. Available ArcGIS feature classes are described below:
|ArcGIS feature class
||Contacts between rock units (lines)
||Rock units (polygons)
||Crestlines of structural folds in geologic units (lines)
||Locations and types of volcanic vents (points)
View the README file for the digital database.
Download ds842.zip (17 MB) containing the digital database.
Federal Geographic Data Committee (FGDC) metadata are available for the database in text format.