National Geologic Map Database
General Information
- Title: Geologic map of the Portland quadrangle, Multnomah and Washington counties, Oregon, and Clark County, Washington
- Author(s): Beeson, M.H., Tolan, T.L., and Madin, I.P.
- Publishing Organization: Oregon Department of Geology and Mineral Industries
- Series and Number: Geological Map Series 75
- Publication Date: 1991
- Map Scale: 1:24,000
- Cross Section: Yes
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* See base map disclaimer below
- This product is available, please note the publication series and number, and then contact:
- Oregon Department of Geology and Mineral Industries
- 800 NE Oregon Street, Suite 965
- Portland, OR 97232-2162
- Phone: (971) 673-1555
- Fax: (971) 673-1562
- Email: dogami-info@oregon.gov
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.