File:Fossiliferous flint with fusulinids (probably Pennsylvanian; Raccoon Creek Valley, Granville, Ohio, USA) (33708485842).jpg
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Summary
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| Description |
Fossiliferous flint from the Pennsylvanian of Ohio, USA. (~3.55 cm across at its widest) This is an American Indian artifact - it's a moderately small flint chip produced by knapping, probably during the making of an arrowhead or spearpoint or knife. The two rice grain-shaped/football-shaped structures near the middle of the specimen are fossils - fusulinid foraminifera (Kingdom Protista). Fusulinids sometimes occur in Pennsylvanian-aged limestones and flints/cherts in eastern Ohio. Flint (chert) is a cryptocrystalline-textured, quartzose sedimentary rock. It can have a chemical origin (as diagenetically-produced nodules) or a biogenic origin (for example, radiolarian cherts). Some Pennsylvanian-aged cherts are inferred to be ultimately derived from quartzose eolian dust on seafloors. This origin may apply to some of eastern Ohio's flint occurrences (e.g., Vanport Flint, Upper Mercer Flint, Zaleski Flint). Provenance: unknown, but possibly derived from the Vanport Flint, Allegheny Group, Middle Pennsylvanian Locality: Raccoon Creek Valley, just west of Granville, Licking County, east-central Ohio, USA |
| Date | |
| Source | Fossiliferous flint with fusulinids (probably Pennsylvanian; Raccoon Creek Valley, Granville, Ohio, USA) |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/33708485842 (archive). It was reviewed on 12 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:27, 12 October 2019 | | 1,835 × 1,049 (1.11 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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