| 词条 | La Voulte-sur-Rhône |
| 释义 |
|name = La Voulte-sur-Rhône |commune status = Commune |image = La Voulte 2.jpg |caption = La Voulte-sur-Rhône seen from across the river |image coat of arms = Blason ville fr La Voulte-sur-Rhône (Ardèche).svg |arrondissement = Privas |canton = Rhône-Eyrieux |INSEE = 07349 |postal code = 07800 |mayor = Marc Bolomey |term = 2008–2014 |intercommunality = Confluences Drôme Ardèche |coordinates = {{coord|44.8003|4.78|format=dms|display=inline,title}} |elevation m = 98 |elevation min m = 85 |elevation max m = 405 |area km2 = 9.70 |population = 5017 |population date = 2008 }} La Voulte-sur-Rhône is a commune in the Ardèche department in southern France. Population{{Historical populations|align=left |1793|1168 |1800|1369 |1806|1261 |1821|1419 |1831|1920 |1836|2189 |1841|2459 |1846|3155 |1851|3153 |1856|3045 |1861|3285 |1866|3160 |1872|3534 |1876|4615 |1881|4958 |1886|4219 |1891|3148 |1896|2604 |1901|2738 |1906|2651 |1911|2760 |1921|3043 |1926|4032 |1931|4326 |1936|3113 |1946|4047 |1954|4489 |1962|5537 |1968|5978 |1975|5892 |1982|5297 |1990|5116 |1999|5168 |2008|5017 }} Lagerstätte{{main|La Voulte-sur-Rhône (lagerstätte)}}La Voulte-sur-Rhône is a marine Lagerstätte (sedimentary deposit) located in France. It is Middle Jurassic (Callovian) in age, and is known for the variety of fossils it produces, including cephalopods, such as Proteroctopus ribeti, Rhomboteuthis lehmani, and Vampyronassa rhodanica. Fossilized cephalopods are rare, and Voulte-sur-Rhône is prized among paleontologists as one of only a few known localities known to produce such cephalopod fossils. Fossil preservation is by pyrite, a geologically rare process. Other sites with pyrite preserved fossils are Beecher's Trilobite Bed and the Hunsrück Slate.[1] Also found at the site are ophiuroids, crustaceans, fish, and other pyritized specimens.[2] The exceptional preservation of the fossils at this site is most likely due to the result of oxygen deficient water at the time of the deposition of the fossils, and possibly repeated sediment blanketing.[3] {{clear left}}See also
References
1. ^{{Citation | author1 = Paul A. Selden | author2 = John R. Nudds | title = Evolution of Fossil Ecosystems | page = 192 | publisher= University of Chicago Press, IL | year=2005 | isbn= 978-0-226-74641-8 | url=http://www.mansonpublishing.com/sample/selden_evolution_sample.pdf | archiveurl = https://web.archive.org/web/20110714030045/http://www.mansonpublishing.com/sample/selden_evolution_sample.pdf | archivedate = July 14, 2011 | deadurl = yes}} see page 41 {{Commons category|La Voulte-sur-Rhône}}{{Ardèche communes}}{{DEFAULTSORT:Voultesurrhone}}{{Ardèche-geo-stub}}2. ^(Bartels, Briggs, and Brassel 1998) 3. ^(sensu Seilacher, Reif, and Westphal 1985) 2 : Communes of Ardèche|Ardèche communes articles needing translation from French Wikipedia |
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