File:Mudchip breccia in sandstone (Logan Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 1 (27067785998).jpg
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| Description |
Mudchip breccia in sandstone in the Mississippian of Ohio, USA. The Logan Formation of eastern Ohio is a Mississippian-aged, siliciclastics-dominated unit having four members (from the base upward): Berne Conglomerate Member, Byer Sandstone Member, Allensville Member, and the Vinton Member. The grayish-colored structures shown above are thin, irregularly-shaped pieces of mudshale. The surrounding yellowish-rusty colored host rock is sandstone. Abundant mudshale chips in a host rock are referred to as mudchip breccias. Mudchip breccias and mudchips in sandstone form when erosion removes thin layers of previously-deposited muds, followed by transportation and deposition in coarser-grained sediments. Mudchips usually become aligned with the horizontal stratification. After burial, diagenesis, uplift, and erosion, mudchip-rich horizons tend to be readily exposed on split surfaces because they are planes of weakness. Stratigraphy: float from the Logan Formation, Osagean, upper Lower Mississippian Locality: Rittenours Outcrop - large roadcut on the northeastern side of Route 35, northeast of the town of Rittenours, Jefferson Township, southeastern Ross County, southern Ohio, USA (39° 13’ 46.29” North latitude, 82° 49’ 57.15” West longitude) |
| Date | |
| Source | Mudchip breccia in sandstone (Logan Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) 1 |
| 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@N05/27067785998 (archive). It was reviewed on 10 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 | 02:23, 10 October 2019 | | 4,000 × 3,000 (7.52 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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