Monday, November 21, 2011

Isopach Maps




Isopach maps show the variation in thickness over an area using contour lines or colors and shading. The map above represents the thickness of limestone and implies a pattern of erosion in the area of NewYork and Pennsylvania around Lake Erie.


http://www.searchanddiscovery.com/documents/2007/07022lash/images/2_18.jpg







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