File:Meigs Falls & Thunderhead Sandstone (Neoproterozoic; Great Smoky Mountains, Tennessee, USA) 3 (36196492393).jpg
![File:Meigs Falls & Thunderhead Sandstone (Neoproterozoic; Great Smoky Mountains, Tennessee, USA) 3 (36196492393).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Meigs_Falls_%26_Thunderhead_Sandstone_%28Neoproterozoic%3B_Great_Smoky_Mountains%2C_Tennessee%2C_USA%29_3_%2836196492393%29.jpg/438px-Meigs_Falls_%26_Thunderhead_Sandstone_%28Neoproterozoic%3B_Great_Smoky_Mountains%2C_Tennessee%2C_USA%29_3_%2836196492393%29.jpg?20191206021356)
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[edit]DescriptionMeigs Falls & Thunderhead Sandstone (Neoproterozoic; Great Smoky Mountains, Tennessee, USA) 3 (36196492393).jpg |
Meigs Falls is a medium-sized waterfall along Meigs Creek in Great Smoky Mountains Park near the Tennessee-North Carolina border. Water tumbles over an outcrop of Thunderhead Sandstone, a unit 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. The Thunderhead Sandstone here consists of coarse-grained sandstone with granules. It has quartz and potassium feldspar - it's an arkosic sandstone. Subangular grains appear to dominate. Some phyllite interbeds are present - these were originally shales, but have been metamorphosed. Stratigraphy: Thunderhead Sandstone, Great Smoky Group, Ocoee Supergroup, Neoproterozoic Locality: Meigs Falls, just upstream from the confluence of Meigs Creek and the Little River, southern side of Little River Road, Great Smoky Mountains National Park, eastern Blount County, eastern Tennessee, USA (vicinity of 35° 40’ 08.33" North latitude, 83° 40’ 30.54” West longitude) |
Date | |
Source | Meigs Falls & Thunderhead Sandstone (Neoproterozoic; Great Smoky Mountains, Tennessee, USA) 3 |
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@N05/36196492393 (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. |
6 December 2019
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current | 02:13, 6 December 2019 | ![]() | 2,000 × 2,739 (5.66 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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File change date and time | 12:45, 3 September 2017 |
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Date and time of digitizing | 17:00, 22 June 2008 |
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Scene type | A directly photographed image |
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Scene capture type | Landscape |
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Date metadata was last modified | 08:45, 3 September 2017 |
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