File:Travertine speleothem cross-section (Luray Caverns, Luray, Virginia, USA) 4 (29517501471).jpg
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| Description |
Quaternary travertine 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. The rock shown above is broken travertine produced during tourist trail construction. The cross-section shows numerous layers with varying impurity content. Pure travertine is white. The non-white colors 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 |
| Date | |
| Source | Travertine speleothem cross-section (Luray Caverns, Luray, Virginia, USA) 4 |
| 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@N05/29517501471. 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. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:58, 14 October 2019 | | 3,483 × 2,958 (3.53 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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