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The Pacific Northwest Center for Geologic Mapping Studies (GeoMapNW) is a grant-funded collaborative research center hosted by the Earth and Space Sciences Department at the University of Washington. The mission of the Center is to provide geologic data and expertise, to conduct geologic mapping and research, and to support the geologic research efforts of others throughout the Pacific NW and beyond. More... New Mercer Island Geologic Mapping Information, as referenced in the Seattle Times More info... UW and USGS Release New Geologic and Landslide Hazard Maps � Fact Sheet - For more details click on "more info!" More info... A new Central Lowland Stratigraphy section is now under development. Check it out! More info... View a graphical map of the quad maps available for download. More info... Read about the processes that we use to create our maps. More info...