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The Problem: Seattle and Portland lie within the Puget-Willamette Lowland of western Washington and Oregon. This seismically active region overlies the Cascadia subduction zone, a source of damaging earthquakes and volcanic activity. The Lowland is also subject to landslides, depletion of groundwater, and pressure on coastal resources and nearshore habitats.
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Our Objective: Produce geologic maps and research
needed for the assessment of seismic shaking hazards, landslide potential, liquefaction, groundwater resources, and
hydrocarbon potential in the urban corridor.
Research Goals: 1) document structure and history of urban fault zones and basins, 2) document lowland surficial deposits, processes and history, 3) document geology of groundwater aquifers, 4) document the lowland regional tectonic framework, and 5) compile results in a uniform, digital earth science database. Cooperators and Collaborators: Washington Division of Geology and Earth Resources, the Oregon Department of Geology and Mineral Industries, University of Washington, Oregon State University, and Portland State University.
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Privacy statement/General Disclaimer
This site is maintained by the Pacific Northwest Urban Corridor Geologic Mapping Project of the Western Earth Surface Processes Team, Geologic Division, U.S. Geological Survey
The URL of this page is http://geomaps.wr.usgs.gov/pacnw/
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