1980. 2002-06-01T04:00:00Z. 2022-12-22T04:01:21Z. Geological Survey (U.S.). The Survey. English. text. Public. Washington (State). Quaternary.
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2. Geologic map of upper Eocene to Holocene volcanic and related rocks in the Cascade Range, Washington
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Washington (State) and Cascade Range. Tertiary.
1982. 2014-04-01T14:54:29Z. 2014-04-15T22:13:37Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. Oregon and Washington (State). Cenozoic and From 65 million years ago.