Lidar-revised geologic map of the Poverty Bay 7.5' quadrangle, King and Pierce Counties, Washington
- More information: USGS Index Page
- Document: Pamphlet (263 kB pdf)
- Sheet: Map (pdf) 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.
- Metadata: Metadata (txt)
- Read Me: Read Me (txt)
- Spatial Data: Geospatial Database (shapefile)
- NGMDB Index Page: National Geologic Map Database Index Page
- Download citation as: RIS | Dublin Core
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.
|Publication Subtype||USGS Numbered Series|
|Title||Lidar-revised geologic map of the Poverty Bay 7.5' quadrangle, King and Pierce Counties, Washington|
|Series title||Scientific Investigations Map|
|Publisher||U.S. Geological Survey|
|Publisher location||Reston, VA|
|Contributing office(s)||Geology, Minerals, Energy, and Geophysics Science Center|
|Description||Pamphlet: ii, 21 p.; 1 Plate: 29.91 x 30.69 inches; Database; Metadata; Readme|
|County||King County, Pierce County|
|Other Geospatial||Poverty Bay 7.5' quadrangle|
|Online Only (Y/N)||Y|
|Additional Online Files (Y/N)||Y|
|Google Analytic Metrics||Metrics page|