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FIGURE 2.04.6 -1 <br />GENERAL COLUMNAR SECTION <br />DAKOTA FORMATION, NEW HORIZON NORTH AREA <br />Age <br />U <br />In <br />L <br />3 <br />Formation /Mbr. <br />Mancos Shale <br />C <br />0 <br />E <br />i <br />0 <br />Upper <br />Mbr. <br />43 ft thk, <br />Middle <br />Carlo. Shale <br />and Coal <br />Mbr. <br />64 ft thk. <br />Lower <br />Mbr. <br />36 ft thk. <br />Brushy Basin <br />Mbr <br />UD1 Seam <br />LDx Seam <br />Nucla SEAM <br />Vertical Scale, ft <br />— 40 ft <br />— 20 ft <br />— 10 ft <br />— 0 <br />Lithology <br />Clay <br />Shale <br />Sandstone <br />Siltstone <br />Coal <br />Section 2.04.6 <br />Page 4 <br />April 2011 <br />