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Weir-Pittsburg Coal Isopach Map

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Thickness of the Weir-Pittsburg coal ranges from 0 to 6 feet with an average of 1.5 feet and distribution skewed to the minimum (0 to 1.8 m, average of 0.5 m). Isopach mapping of the Weir-Pittsburg coal reveals a coal that stays fairly consistent in thickness over an average of 2.5 miles (4 km). When overlaying contours of top Mississippian structure, the coal appears to follow the structural strike. The Weir-Pittsburg coal exhibits a lenticular geometry that is oriented parallel to depositional strike, and is consistently thicker through an acute trend from southern Labette through Montgomery and Wilson counties. Localized circular areas of the Weir-Pittsburg coal may be due to removal by fire or crevasse splays.

color isopach map of Weir-Pitt coal overlain by Mississippian contours

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Kansas Geological Survey, Petroleum Research
Updated Sept. 18, 2003
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