Digitally rendered geology map from 1911 of North America

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#Map

This is a digitally rendered geology map from 1911 of North America, complied by the United States Geological Survey, the Geological Survey of Canada and the Instituto Geologico de Mexico.

#cartography 
#Geography





Vineesh V
Assistant Professor of Geography,
Directorate of Education,
Government of Kerala.
https://www.facebook.com/Applied.Geography
http://geogisgeo.blogspot.com

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