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Open-File Report 2010–1265

Geologic Map of the White Hall Quadrangle, Frederick County, Virginia, and Berkeley County, West Virginia

By Daniel H. Doctor, Randall C. Orndorff, Ronald A. Parker, David J. Weary, and John E. Repetski

Thumbnail of front cover and link to report - The WhiteHall Quadrangle, Frederick County, Virginia, and Burke County, West Virginia
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Abstract

The White Hall 7.5-minute quadrangle is located within the Valley and Ridge province of northern Virginia and the eastern panhandle of West Virginia. The quadrangle is one of several being mapped to investigate the geologic framework and groundwater resources of Frederick County, Va., as well as other areas in the northern Shenandoah Valley of Virginia and West Virginia. All exposed bedrock outcrops are clastic and carbonate strata of Paleozoic age ranging from Middle Cambrian to Late Devonian. Surficial materials include unconsolidated alluvium, colluvium, and terrace deposits of Quaternary age, and local paleo-terrace deposits possibly of Tertiary age. The quadrangle lies across the northeast plunge of the Great North Mountain anticlinorium and includes several other regional folds. The North Mountain fault zone cuts through the eastern part of the quadrangle; it is a series of thrust faults generally oriented northeast–southwest that separate the Silurian and Devonian clastic rocks from the Cambrian and Ordovician carbonate rocks and shales. Karst development in the quadrangle occurs in all of the carbonate rocks. Springs occur mainly near or on faults. Sinkholes occur within all of the carbonate rock units, especially where the rocks have undergone locally intensified deformation through folding, faulting, or some combination.

For more information about the project see http://geology.er.usgs.gov/eespteam/Karst/ for geologic mapping efforts and http://va.water.usgs.gov/va134/index.htm for water resource investigation efforts.

First posted December 2010

For additional information contact:
Daniel H. Doctor
U.S. Geological Survey
Mail Stop 926A
12201 Sunrise Valley Drive
Reston, VA 20192

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Suggested citation:
Doctor, D.H., Orndorff, R.C., Parker, R.A., Weary, D.J., and Repetski, J.E., 2010, Geologic map of the White Hall quadrangle, Frederick County, Virginia, and Berkeley County, West Virginia: U.S. Geological Survey Open-File Report 2010–1265, 1 pl., scale 1:24,000, available only at https://pubs.usgs.gov/of/2010/1265.



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