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Scientific Investigations Map 3317

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# Lidar-Revised Geologic Map of the Poverty Bay 7.5' Quadrangle, King and Pierce Counties, Washington

#### By Rowland W. Tabor, Derek B. Booth, and Kathy Goetz Troost

| Introduction
For this map, we interpreted a 6-ft-resolution lidar digital elevation model combined with thegeology depicted on the Geologic Map of the Poverty Bay 7.5' Quadrangle, King and Pierce Counties,Washington (Booth and others, 2004b). The authors of the 2004 map described, interpreted, and locatedthe geology on the 1:24,000-scale topographic map of the Poverty Bay 7.5' quadrangle.

The topographic map, published in 1997 but compiled in 1957, includes planimetry derived from          1990 imagery and 20-ft contours, nominal horizontal resolution of 40 ft (12 m), and nominal vertical          accuracy of 10 ft (3 m). Similar to many surficial geologic maps, much of the geology in Booth and          others (2004b) was interpreted from landforms portrayed on the topographic map.          

In 2003, the Puget Sound Lidar Consortium obtained a lidar-derived digital elevation model          (DEM) for the Puget Sound region including all of the Poverty Bay 7.5' quadrangle. For a brief          description of lidar (LIght Detection And Ranging) and this data acquisition program, see Haugerud and          others (2003). This new DEM has a horizontal resolution and accuracy of 6 ft (2 m) and vertical          accuracy of approximately 1 ft (0.3 m). The greater resolution and accuracy of the lidar DEM have          facilitated a new interpretation of the geology, especially the distribution and relative age of some          surficial deposits. | First posted November 14, 2014
-  **Map**; 2-view PDF (15.6 MB) The map PDF shows two views: the opening view shows the complete map; the second view shows the map without the unit colors to emphasize the lidar base.
-  **Pamphlet** PDF (263 kB)  Pamphlet to accompany SIM 3317 map
-  **Database** ZIP (20.3 MB)   Contains: geospatial database. Refer to the Readme and Metadata files for more information. 

**This publication is online only**

**For additional information, contact:**GMEG staff,  Geology, Minerals, Energy, &           Geophysics Science Center          U.S. Geological Survey           345 Middlefield Road          Menlo Park, CA 94025-3591http://geomaps.wr.usgs.gov/gmeg/

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### Suggested citation:

Tabor, R.W., Booth, D.B., and Troost, K.G., 2014, Lidar-revised geologic map of the Poverty Bay 7.5' quadrangle, King and Pierce Counties, Washington: U.S. Geological Survey Scientific Investigations Map 3317, 22 p., scale 1:24,000, *https://dx.doi.org/10.3133/sim3317*.

ISSN 2329-132X (online)

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U.S. Department of the Interior |            U.S. Geological Survey           	URL: *http://pubsdata.usgs.gov/pubs/sim/3317/index.html*            Page Contact Information: GS Pubs Web Contact           	Page Last Modified: Thursday, 01-Dec-2016 17:31:44 EST