Product Description Page Title: Geology of the Portland quadrangle, Oregon-Washington Author(s): Trimble, D.E. Publishing Organization: U.S. Geological Survey Publication Series and Number: Geologic Quadrangle Map GQ-104 Publication Date: 1957 Map Scale: 1:62,500 Cross Section: None Northernmost Latitude: 45°45' 0"N (45.7500) Southernmost Latitude: 45°30' 0"N (45.5000) Easternmost Longitude: 122°30' 0"W (-122.5000) Westernmost Longitude: 122°45' 0"W (-122.7500) ISBN: 0607741406 Publication Format: Digital and Paper Online:         View high-resolution images:                  Option 1 (requires ExpressView plug-in for Windows)                  Option 2 (no plug-in needed.) This Product Is Available, Please note the publication series and number, and then contact: U.S. Geological Survey Postal Address: USGS Information Services Box 25286 Denver, CO 80225 Voice Telephone: (303) 202-4700 or 1-888-ASK-USGS Facsimile Telephone: (303) 202-4693 Geologic units in this publication that are referred to in Geolex: Troutdale If any fields in this record contain errors, please send us your Has this record been U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html Database project personnel. Last modified: 28-Nov-2011