Geologic Investigations Series Map I-2553

Published 2006
Version 1.1 (Revised March 2007)

Geologic Map of Loudoun County, Virginia

By Scott Southworth, William C. Burton, J. Stephen Schindler, and Albert J. Froelich


The geology of Loudoun County, Va., was mapped from 1988 through 1991 under a cooperative agreement between the U.S. Geological Survey (USGS) and the Loudoun County Office of Mapping and Geographic Information. This geologic map was compiled in 1993 from a series of detailed published and unpublished field investigations at scales of 1:12,000 and 1:24,000. Some of these same data were compiled as a digital geologic map at 1:100,000 scale (Burton and others, 1992a) and were the basis for a cost-benefit analysis of the societal value of geologic maps (Bernknopf and others, 1993).

Available Products

Geologic Map of Loudoun County, Virginia

Map Plate [5.8-MB PDF file; 58x54 inches]

Pamphlet to accompany map

Map Text [3-MB PDF file; 34 p.]

To view the PDF document, you need the Adobe Acrobat® Reader installed on your computer. (A free copy of the Acrobat® Reader may be downloaded from Adobe Systems Incorporated.) To download PDF files, right-click (PC) or control-click (Macintosh).

Version 1.1

Version 1.1 incorporates some minor changes made to the accompanying pamphlet in the References Cited section.

Ordering Instructions

To order maps, publications, and other miscellaneous products on paper and compact disc media from the USGS:

USGS Information Delivery
Box 25286
Denver, CO 80225
Telephone: 1-888-ASK-USGS

ISBN 1-411-30968-5

Suggested citation:
Southworth, Scott, Burton, W.C., Schindler, J.S., and Froelich, A.J., 2006, Geologic map of Loudoun County, Virginia: U.S. Geological Survey Geologic Investigations Series Map I2553, scale 1:50,000.


For scientific questions or comments concerning this report, contact Scott Southworth.

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