Category:Concretions from the Pottsville Formation, Ohio

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This category has only the following subcategory.

Media in category "Concretions from the Pottsville Formation, Ohio"

The following 6 files are in this category, out of 6 total.

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  Ironstone concretion (Lower Mercer Ore, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 1 (24621692408).jpg 3,632 × 2,239; 5.69 MB
  
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  Ironstone concretion (Lower Mercer Ore, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 3 (37778691374).jpg 3,684 × 1,982; 4.56 MB
  
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  Ironstone concretion (Lower Mercer Ore, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 4 (38493807301).jpg 3,574 × 2,429; 5.64 MB
  
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  Ironstone concretion (Lower Mercer Ore, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 6 (37778648754).jpg 3,052 × 3,000; 4.41 MB
  
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  Ironstone concretion (lower Pottsville Group, Lower Pennsylvanian; Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 2 (30226086067).jpg 2,315 × 1,955; 3.04 MB
  
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  Ironstone concretion (lower Pottsville Group, Lower Pennsylvanian; Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 3 (30226086427).jpg 2,118 × 1,870; 2.58 MB