[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2011
Resource Type:
Map
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Full Title:
Bedrock geologic map of the Grafton quadrangle, Worcester County, Massachusetts / Gregory J. Walsh, John N. Aleinikoff, and Michael J. Dorais ; prepared in cooperation with the Commonwealth of Massachusetts, Massachusetts Geological Survey
Relief shown by contours and spot heights. Title from title screen (viewed on Mar. 13, 2012). Includes location map, index map, lithologic column, col. ill., 1 table, and 3 cross-sections.