A 2,256 ft (688 m) continuous core was drilled in Kiowa, Colorado in early 1999 as part of a research effort coordinated by the Denver Museum of Nature & Science. The 2.5 inch (6 cm) diameter core sampled the uppermost Pierre Shale, Fox Hills Sandstone, Laramie Formation, and the overlying synorogenic strata (known as the Denver and Dawson Formations) that fill the Denver Basin. Core recovery was 93 percent and the core is archived at the U.S. Geological Survey core research facility in Lakewood, Colorado.

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