Isopach

An isopach map illustrates the variations of stratums or components of a certain area. These maps usually display information-reguarding thicknesses in rocks. These areas are illustrated by a contour line, which shows the variations of thickness.

Example map shows the thickness of the Tully Limestone of the Moscow Shale. The map shows the thickness of the limestone in feet.

Reference URL: http://www.searchanddiscovery.com/documents/2007/07022lash/images/2_18.htm