National Geologic Map Database
General Information
- Title: Geologic map of the Ridgefield quadrangle, Clark and Cowlitz Counties, Washington
- Author(s): Evarts, R.C., Dinterman, Philip, and Block, Jessica
- Publishing Organization: U.S. Geological Survey
- Series and Number: Scientific Investigations Map SIM-2844
- Publication Date: 2004
- Map Scale: 1:24,000
- Cross Section: Yes
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