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U.S. Geological Survey Open-File Report 2009-1172

Pubs Warehouse

# Geologic Map of the Carlton Quadrangle, Yamhill County, Oregon

#### By Karen L. Wheeler, Ray E. Wells, Joseph M. Minervini, and Jessica L. Block

| ABSTRACT
The Carlton, Oregon, 7.5-minute quadrangle is located in northwestern Oregon, about 35 miles (57 km) southwest of Portland. It encompasses the towns of Yamhill and Carlton in the northwestern Willamette Valley and extends into the eastern flank of the Oregon Coast Range. The Carlton quadrangle is one of several dozen quadrangles being mapped by the U.S. Geological Survey (USGS) and the Oregon Department of Geology and Mineral Industries (DOGAMI) to provide a framework for earthquake- hazard assessments in the greater Portland, Oregon, metropolitan area. The focus of USGS mapping is on the structural setting of the northern Willamette Valley and its relation to the Coast Range uplift. Mapping was done in collaboration with soil scientists from the National Resource Conservation Service, and the distribution of geologic units is refined over earlier regional mapping (Schlicker and Deacon, 1967). Geologic mapping was done on 7.5-minute topographic base maps and digitized in ArcGIS to produce ArcGIS geodatabases and PDFs of the map and text. The geologic contacts are based on numerous observations and samples collected in 2002 and 2003, National Resource Conservation Service soils maps, and interpretations of 7.5-minute topography. The map was completed before new, high-resolution laser terrain mapping was flown for parts of the northern Willamette Valley in 2008. | First posted October 8, 2009
     **File for viewing and plotting**
-  **Map** PDF (15 MB) 

     **Data**
-  **Readme file**  .txt (64 kB) 
-  **Readme file**  .PDF (40 kB) 
-  **Metadata file**  .txt (88 kB) 
-  **Metadata file**  .PDF (120 kB) 
-  **Geodatabase package**  .zip (6.6 MB) 
-  **Shapefile package**  .zip (3.1 MB) 
- This report is available only on the Web.

**For additional information:**Contact Information, Western Region Geology and Geophysics Science Center—Menlo ParkU.S. Geological Survey345 Middlefield Road, MS-989Menlo Park, CA 94025-3591http://geomaps.wr.usgs.gov/

Part of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |
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### Suggested citation:

Wheeler, Karen L., Wells, Ray E., Minervini, Joseph M., and Block, Jessica L., 2009, Geologic map of the Carlton quadrangle, Yamhill County, Oregon:  U.S. Geological Survey Open-File Report 2009-1172, scale 1:24,000 and database.

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U.S. Department of the Interior |		U.S. Geological Survey		URL: *http://    pubsdata.usgs.gov    /pubs/of/2009/1172/index.html*		Page Contact Information: USGS Publications Team		Page Last Modified: Wednesday, 07-Dec-2016 22:01:43 EST