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22. Stratigraphic cross section of Cretaceous rocks along the north flank of the Unita Basin, northeastern Utah, to Rangely, northwestern Colorado
23. Geologic map showing thickness of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming
24. Map showing contours on top of the upper Cretaceous Mowry Shale, Powder River Basin, Wyoming and Montana
25. Map showing altitude of the top of the Judith River Formation, Montana
26. Map showing total thickness of the Fox Hills-Lower Hell Creek aquifer, Montana
27. Map showing cumulative thickness of sandstone in the "Dakota Sandstone," Montana
28. Map showing cumulative thickness of sandstone in the Fox Hills-Lower Hell Creek aquifer, Montana
29. Map showing total thickness of the Lakota Formation and equivalent rocks, Montana
30. Map showing total thickness of the "Dakota Sandstone," Montana
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