Washington Geology Party
<<<<UPDATED BLUE VERSION AVAILABLE 1/24/18>>>>
13 in x 19 in
A colorful take of Washington's surficial geology classes. This map makes use of the 1:500,000 scale surficial geology dataset produced by the Washington Geological Survey. Identify the extent of loess and basalt in the Columbia Basin, glacial drift in the Puget Sound, and the volcanic and intrusive lithologies of Washington's many mountain ranges.