Category:Carbonaceous shales of the Pottsville Formation

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Media in category "Carbonaceous shales of the Pottsville Formation"

The following 2 files are in this category, out of 2 total.

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  Carbonaceous shale (Pottsville Group, Lower Pennsylvanian; Jackson North Outcrop, Jackson County, Ohio, USA) 1 (30852139487).jpg 4,000 × 3,000; 7.4 MB
  
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  Carbonaceous shale (Pottsville Group, Lower Pennsylvanian; Jackson North Outcrop, Jackson County, Ohio, USA) 5 (43974957220).jpg 4,000 × 3,000; 7.38 MB