Category:Chert nodules in the United States

Subcategories

This category has the following 5 subcategories, out of 5 total.

Media in category "Chert nodules in the United States"

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

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  Chert nodule horizon in fossiliferous limestones (Columbus Limestone, Middle Devonian; Marblecliff Quarry, Hilliard, Ohio, USA) (48384566297).jpg 1,799 × 1,199; 2.73 MB
  
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  Flint nodules in limestone (Upper Mercer Limestone, Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 1 (30762010801).jpg 4,000 × 3,000; 4.56 MB