Crystalline rocks of the Potomac River Gorge near Washington, D.C. /

Bibliographic Details
Main Authors:	Reed, John Calvin, Jr., 1930- (Author), Jolly, Janice L. W. (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1963.
Series:	Geological Survey professional paper ; 414-H. Contributions to general geology.
Subjects:	Crystalline rocks > Washington Metropolitan Area. Crystalline rocks > Potomac River Valley. Geology > Washington Metropolitan Area. Geology > Potomac River Valley. Geology, Stratigraphic > Paleozoic. Crystalline rocks. Geology. Geology, Stratigraphic. Paleozoic Geologic Period. Washington (D.C.) From 230 to 570 million years ago
Online Access:	http://purl.fdlp.gov/GPO/gpo83607 http://purl.fdlp.gov/GPO/gpo833607

Description
Item Description:	Title from title screen (viewed September 24, 2014). "A description of the rocks exposed in the gorge of the Potomac River below Great Falls, with a discussion of their structural and metamorphic history."
Physical Description:	1 online resource (iii, H16 pages) : illustrations, maps + 2 plates.
Bibliography:	Includes bibliographical references (page H16).