Preliminary geologic map of the Dixie Mountain 7.5' quadrangle, Columbia, Multnomah, and Washington counties, Oregon

The purpose of this project is to improve geologic mapping in the Portland urban area in order to better understand earthquake hazards. This coverage represent the most up-to-date, digital geology coverage currently available for the Dixie Mountain quadrangleThis archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Relief shown by hill shadings and contoursIncludes traverse mapPart of a 5-year collaboration between the U.S. Geological Survey and the Oregon Dept. of Geology and Mineral IndustriesFunded in part by the U.S. Geological Survey Earthquake Reduction Program, award 03HQAG0013Mode of access: Internet from the Oregon Government Publications Collection.Text in English