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File:Travertine flowstone (Luray Caverns, Luray, Virginia, USA) 16 (28753184624).jpg

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Travertine flowstone in a cave in Virginia, USA

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Travertine flowstone in a cave in Virginia, USA.

"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. Travertine speleothem occurs in a wide variety of forms. The most common variety of travertine speleothem is dripstone, which forms by the action of dripping water. The second-most common type of travertine speleothem is flowstone, which forms by precipitation of crystals from relatively thin films of flowing water. Flowstone typically has the appearance of a frozen waterfalls.

Pure travertine is white. The colors seen in most of the travertine shown above are from iron oxides.

Luray Caverns is developed in structurally-tilted dolostones of the Beekmantown Dolomite (Lower Ordovician).

Locality: Luray Caverns, Luray, central Page County, northern Virginia, USA
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Source Travertine flowstone (Luray Caverns, Luray, Virginia, USA) 16
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@N05/28753184624. It was reviewed on 14 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

14 October 2019

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current19:54, 14 October 2019Thumbnail for version as of 19:54, 14 October 20193,000 × 4,000 (4.93 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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