Generalized geologic map of the crystalline rocks in central Maryland, southern Pennsylvania, and Delaware

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Title: Generalized geologic map of the crystalline rocks in central Maryland, southern Pennsylvania, and Delaware
Author: Zietz, I.; Higgins, M.W.; Fisher, G.W.
Abstract: This map is Plate 3 from Fisher, G.W., “Geological Interpretations of Aeromagnetic Maps of the Crystalline Rocks in the Appalachians, Northern Virginia to New Jersey”. Baltimore: Maryland Geological Survey, 1979 (Report of Investigations No. 32).
Description: This digital image was produced in the Summer of 2012 by the Maryland State Archives (MSA) from the original map held by the Maryland Geological Survey (MGS). We are indebted to the staff of the MGS and MSA for helping us make this these images available.
URI: http://jhir.library.jhu.edu/handle/1774.2/36167
Date: 1979
Subject: Delaware--Geology--Maps
Pennsylvania--Geology--Maps
Maryland--Geology--Maps
Maryland--Maps
Series: Report of Investigations;No.32

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