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Kansas Geological Survey Open-File Report |
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Isopach mapping of the Mulky coal reveals a coal that is laterally discontinuous coal and has a consistency in thickness over an average of 3 miles (4.8 km). Thickness of the Mulky coal ranges from 0 to 2.5 feet with an average of 0.75 feet and a distribution that is skewed to the minimum (0 to 0.8 m, average of 0.2 m). The Mulky coal exhibits an irregular distribution. Local structure appears to have influenced coal thickness. When overlaying structural contours of top Brezzy Hill Structure onto an isopach of Mulky coal thickness, the coal appears to thicken on highs and thin into lows. The Mulky coal is consistently thicker in areas of Montgomery, Labette, and Neosho counties. Areas and trends of thin Mulky coal thickness may be due to non-deposition or deposition of carbonaceous shale instead of coal.
