Category:Opeche Shale
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Media in category "Opeche Shale"
The following 4 files are in this category, out of 4 total.
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NPS jewel-cave-geologic-map.jpg 3,414 × 2,304; 819 KB
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NPS Wind Cave NP Geologic Map.png 794 × 596; 81 KB
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NPS wind-cave-geologic-map.jpg 3,232 × 3,720; 1.85 MB
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Williston Basin stratigraphic column.jpg 178 × 799; 59 KB