File:Mudchips in sandstone (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 2 (46614590195).jpg
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Mudchip breccia in sandstone in the Mississippian of Ohio, USA. The Bowerston Shale Company was founded in the fall of 1929 by Samuel D. Milliken. They have brick manufacturing plants in Bowerston, Ohio and Hanover, Ohio. The Hanover plant makes bricks using rocks derived from two quarries that I know of - the Hanover Pit and the Frazeysburg Pit. I have visited both, with kind permission of the Bowerston company. The Hanover Pit targets shales of the Vinton Member (Logan Formation), a Lower Mississippian mixed siliciclastics unit. The Frazeysburg Pit targets shales of the Pottsville Group, a Pennsylvanian-aged succession of interbedded shales, limestones, sandstones, coals, flint, clay, and minor ironstone. The shales are excavated at both pits and left in piles in the quarries to weather. Limestones, sandstones, and coals are excluded from the shale piles. Shale material is eventually trucked to the Hanover Plant, where it is processed into bricks. The brownish-colored structures seen above are thin, irregularly-shaped pieces of weathered mudshale with ferruginous staining. The surrounding host rock is sandstone. This material is part of the unusable overburden at the Hanover Pit. 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: Vinton Member, upper Logan Formation, Osagean Stage, upper Lower Mississippian Locality: active quarry, Hanover Pit (Bowerston Shale Company), south of Route 16 & Rock Haven Road, southeast of the town of Hanover, far-eastern Licking County, east-central Ohio, USA (40° 04’ 15.43” North latitude, 82° 14' 44.02" West longitude) |
| Date | |
| Source | Mudchips in sandstone (Vinton Member, Logan Formation, Lower Mississippian; Hanover Pit, Licking County, Ohio, USA) 2 |
| 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@N05/46614590195 (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 | |
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| current | 02:24, 10 October 2019 | | 3,771 × 3,000 (5.91 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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