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Data Series 842

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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

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Title Page
Introduction
Data
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Index page

Data

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 Description
geologic_lines Contacts between rock units (lines)
geologic_polys Rock units (polygons)
geologic_structures Crestlines of structural folds in geologic units (lines)
volcanic_vents 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.