Atlas 168
	Lancaster quadrangle—Geology and mineral resources (Manheim, Lititz, Columbia East, and Lancaster 7.5-minute quadrangles, Lancaster and Lebanon Counties) by Jonas, A. I., and Stose, G. W. 1930
Suggested Citation:	Jonas, A. I., and Stose, G. W., 1930, Lancaster quadrangle—Geology and mineral resources: Pennsylvania Geological Survey, 4th ser., Atlas 168, 106 p. [Available online.]
Description:	This report is on the geology, geologic structure, and mineral and water resources of the Lancaster 15-minute quadrangle, an area of approximately 234 square miles in Lancaster and Lebanon Counties. The study area is a region of sedimentary and igneous rocks—Cambrian, Ordovician, and Triassic sedimentary rocks; Tertiary and Quaternary sedimentary deposits; and Triassic igneous rocks, which are mainly Triassic diabase. The geologic units are shown on Plate 2, a 1:62,500-scale geologic map. Limestone, clay, sand, building stone, iron, lead, and zinc are the primary and economically important mineral resources. Limestone occupies a large part of the area and has been extensively quarried for many years. The report focuses on a number of quarries and the product(s) quarried and/or excavated. Plate 1 of this report is a 1:62,500-scale topographic map showing the distribution of quarries within the Lancaster quadrangle.
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