File:Earthquake-detached travertine speleothem (Endless Caverns, Virginia, USA) 1 (31245883356).jpg
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[edit]DescriptionEarthquake-detached travertine speleothem (Endless Caverns, Virginia, USA) 1 (31245883356).jpg |
"Cave formations" in caves are technically called speleothem. Most speleothem is composed of travertine, a crystalline-textured chemical sedimentary rock composed of calcite (CaCO3). Travertine forms in most caves and at some springs by precipitation of crystals from water. Pure travertine is white. The colors seen in the travertine shown above are from iron oxides. Travertine speleothem occurs in a wide variety of forms. The most common variety is dripstone, which forms by the action of dripping water - examples include stalactites, stalagmites, columns, and draperies. The second most common variety is flowstone, which forms from flowing films of water. Flowstone has the appearance of a frozen waterfalls. These pieces of travertine speleothem in Endless Caverns, Virginia, USA were broken and detached from the cave ceiling during an earthquake long ago. The detachment event was so long ago that these masses have become cemented to their substrate. The publicly accessible portions of Endless Caverns are developed in structurally tilted carbonates of the New Market Limestone (Middle Ordovician). Other portions of the cave are in overlying units: the Lincolnshire Limestone and the Edinburgh Formation. Locality: Endless Caverns, south of the town of New Market, eastern Rockingham County, northern Virginia, USA |
Date | |
Source | Earthquake-detached travertine speleothem (Endless Caverns, Virginia, 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@N05/31245883356 (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. |
12 October 2019
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current | 13:32, 12 October 2019 | ![]() | 4,000 × 3,000 (4.91 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Date and time of data generation | 13:07, 13 May 2016 |
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Horizontal resolution | 180 dpi |
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File change date and time | 16:27, 27 November 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 13:07, 13 May 2016 |
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Digital zoom ratio | 1 |
Scene capture type | Portrait |
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Date metadata was last modified | 09:27, 27 November 2016 |
Unique ID of original document | 7F45D467FD0F6BC3B430F7B00E82CFE2 |