EarthWorks Geospatial Catalog

Surficial geologic map of the Concord quadrangle, Merrimack County, New Hampshire / by David Franzi, Chad Wittkop, and Carl Koteff ; cartography by Chad Wittkop and Kristen Svendsen.

Relief shown by contours and spot heights. "Contour interval 20 feet." "Open-File map no. GEO-150-024000-SMAP." "Base map by U.S. Geological Survey, 1968, photorevised 1985." "Geology mapped 1989-1991 ; 2005. Digital map published 2008." Includes quadrangle location map and text "Glacial geology of New Hampshire." Space empty for the 2 photos as listed on map.
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