Isopach map (in color scale) overlain with contours of top Mississippian structure. Proximate analysis, volumetrics and the typical depositional sequence of the Weir-Pittsburg coal are based on cores from southeastern Kansas. Note the trend of the Weir-Pittsburg coal follows the strike of the Mississippian structure indicating a possible relationship with the paleo-shoreline. Areal extent, thickness and geometry of the coal indicate a coastal depositional setting.