These GIS files were used in the production of OFBM 05–05.0: Preliminary Bedrock Geologic Map of a Portion of the Wilmington 30- by 60-Minute Quadrangle, Southeastern Pennsylvania, located on the Pennsylvania Geological Survey web site at: http://www.dcnr.state.pa.us/topogeo/openfile/compmap05.aspx
The report was funded in part by the USGS National Cooperative Geologic Mapping Program.
Bedrock geologic mapping compilation was done by Gale C. Blackmer.
Digital map production was done by Stuart O. Reese of the Pennsylvania Geological Survey.
For information, contact:
Stuart Reese, P.G.
Pennsylvania Geological Survey
Department of Conservation and Natural Resources
Bureau of Topographic and Geologic Survey
3240 Schoolhouse Road
Middletown, PA 17057-3534
Voice: 717-702-2032 (direct)
717-702-2017 (indirect)
e-mail: streese@state.pa.us
web site: http://www.dcnr.state.pa.us/topogeo/
Maps were prepared using ESRI software ArcInfo ArcMap 9.x.
The base map of the area may be downloaded from the U. S. Geological Survey's National Elevation Dataset (NED). The shaded relief layer is from the seamless raster format 1/3 arc second (10m) data. Water bodies are from the U. S. Geological Survey, National Hydrography Dataset (NHD), 1:24,000 scale accuracy. Municipal, county, and state boundary lines are from PASDA Pennsylvania Department of Transportation layers, 2004, 1:24,000-scale accuracy.
This file contains GIS data of the bedrock geologic map that was created for this project, and a short text describing the bedrock geologic units of the portion of the Wilmington 30- by 60-minute quadrangle in southeastern Pennsylvania. This includes the following 7.5-minute quadrangles:
Please note that the enclosed data and maps were created in ESRI ArcGIS 9.x. Although this data functioned properly on Pennsylvania Geological Survey equipment, it does not guarantee it will work on equipment outside the Bureau.