Thursday, April 17, 2014

Isopach


http://www.kgs.ku.edu/PRS/Coal/weir.htmlhttp://www.kgs.ku.edu/PRS/Coal/weir.html
Isopachs are lines connecting points of equal thickness of stratum (in the atmosphere or within rock). This map is showing thickness of rock of the Weir-Pittsburg coal.

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