U.S. Geological Survey: Science for a Changing World - USGS visiaul identifier and link to main Web site at http://www.usgs.gov/

Physiographic provinces of Virginia (Allegheny Plateau, Valley and Ridge, Blue Ridge, Piedmont, and Coastal Plain) and in field trip area, and generalized cross section A-A' of field trip. For a more detailed explanation, contact Scott Southworth at ssouthwo@usgs.gov or Bill Burton at bburton@usgs.gov  

Figure 1. Physiographic provinces of Virginia and in field trip area, and generalized cross section A–A' of field trip. Numbers refer to field trip stops. Heavy lines in Mesozoic basin on cross section are dikes and sills. M, Mesozoic basins.

U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip1/fig1.html
For more information, contact Scott Southworth or William Burton
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