Category:Geology of Delaware County, Ohio
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This category has the following 5 subcategories, out of 5 total.
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Media in category "Geology of Delaware County, Ohio"
The following 13 files are in this category, out of 13 total.
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Black shale (Ohio Shale, Upper Devonian; Lazarus Run, Delaware County, Ohio, USA) 1.jpg 2,301 × 1,518; 2.08 MB
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Black shale (Ohio Shale, Upper Devonian; Lazarus Run, Delaware County, Ohio, USA) 2.jpg 2,239 × 1,439; 1.96 MB