Geological Map of New Jersey
Modified from a diagram produced by the Department of Environmental Protection New Jersey Geological Survey 2002.
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Generalized Map of Major Formations of North America
Modified from a diagram by Frederick H Pough found in A Field Guide to Rocks and Minerals.
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Maps obtained from the Natural Resources Canada web site http://www.nrcan.gc.ca/gsc/mrd/wmgdb/public/images_e.php
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