File:Metcalf Phyllite (Neoproterozoic; Laurel Creek Road outcrop, Great Smoky Mountains, Tennessee, USA) 12 (36750911870).jpg
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| Description |
Phyllite in the Precambrian of Tennessee, USA. (camera lens cap for scale) This is a talus piece of Metcalf Phyllite in the Great Smoky Mountains. The formation is one of many stratigraphic units in the ~50,000 feet thick Ocoee Supergroup. The Ocoee has considerable deposits of sandstone and shale originally deposited as sands and muds in an ancient ocean trench. Trenches form along subduction zones, where a tectonic plate composed of thin, heavy oceanic lithosphere dives down into the mantle below another tectonic plate of either oceanic lithosphere or thick, lightweight continental lithosphere. Rocks in the Metcalf Phyllite were originally shales, but have been metamorphosed to phyllites. Phyllite is a foliated, low to intermediate grade metamorphic rock dominated by mica. It often has wrinkled and crinkled foliation surfaces. Stratigraphy: Metcalf Phyllite, upper Snowbird Group, Ocoee Supergroup, Neoproterozoic Locality: roadcut along Laurel Creek Road, east of Cades Cove, Great Smoky Mountains National Park, southeastern Blount County, far-eastern Tennessee, USA |
| Date | |
| Source | Metcalf Phyllite (Neoproterozoic; Laurel Creek Road outcrop, Great Smoky Mountains, Tennessee, USA) 12 |
| 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@N05/36750911870 (archive). It was reviewed on 6 December 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 | 02:17, 6 December 2019 | | 3,008 × 2,000 (4.68 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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