Category:Harrell Shale
Media in category "Harrell Shale"
The following 3 files are in this category, out of 3 total.
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Geologic cross section of Devonian strata from New York to Alabama.svg 1,000 × 500; 221 KB
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Harrell Shale outcrop Bedford County PA 2006.jpg 3,072 × 2,048; 5.21 MB
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USGS 2006 1237 Fig7b.png 1,713 × 709; 138 KB