...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Quaternaire >Le tuf calcaire de La Celle-sur-Seine (Seine et Marne) : nouvelles données sur un site clé du stade 11 dans le Nord de la France
【24h】

Le tuf calcaire de La Celle-sur-Seine (Seine et Marne) : nouvelles données sur un site clé du stade 11 dans le Nord de la France

机译：塞纳河畔塞勒河畔的石灰岩凝灰岩：法国北部第11阶段关键地点的新数据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

New morpho and biostratigraphical studies have been undertaken at the famous calcareous tufa deposit of La Celle-sur-Seine in order to obtain a detailed paleoenvironmental and climatic reconstruction from this Middle Pleistocene Interglacial formation. Multiproxy approach allows to study palaeontological contain of the tufa as well as its morphostratigraphical aspects and chronological allocation.First results from malacological study show that the tufa edificated downwards the slope reaching a total thickness of 9 metres high. Moreover molluscs show palaeoenvironmental succession corresponding to the early part of an Interglacial period followed by an optimum phase. Finally, at the top of the deposit faunas clearly indicate decrease of forest biotopes. Excavation of new profiles have allowed to discover a grey silty tufa horizon (lgt) yielding abundant mammal remains and a few lithic artefacts. This level is part of the molluscs zone 3 corresponding to the climatic optimum. Palaeoenvironmental and climatic conditions inferred from mammal assemblage (including Hippopotamus and Macaca) strengthened the malacological interpretation. The lithic industry is identified as Acheulean and appears in agreement with earliest handaxes discoveries during the late 19th century. La Celle malacological fauna belongs to the well-known MIS 11 "Lyrodiscus assemblage" in north-west Europe. This chronological allocation is confirmed by first U-series radiometric measures. Finally reappraisal of leaf print collections allows together with malacological data to discuss palaeoclimatic interpretation of the "Lyrodiscus biome". Flora and fauna from La Celle include a few mediterranean trees and several extinct gastropods together with few molluscs of central Europe modern range, allowing to describe a forest and humid lanscape. Presence of these peculiar species in northern France is thought to be related with the long length of MIS 11 and lower seasonal temperature contrast, that have allowed northern colonisation by southern species, rather than with occurrence of temperature higher than today.
机译：在塞纳河畔拉塞勒的著名钙质石灰岩矿床进行了新的形态学和生物地层学研究，目的是从这个中更新世间冰期地层获得详细的古环境和气候重建。多代理方法允许研究石灰石的古生物学成分，地层学特征和年代顺序。乳酸盐学研究的第一项结果表明，石灰石向下倾斜斜坡，总厚度达9米。此外，软体动物显示出古环境的演替，对应于冰川间期的早期，随后是最佳阶段。最后，在沉积物顶部，动物区系清楚地表明森林生物群落的减少。挖掘新的轮廓可以发现灰色粉质的石灰岩地平线（lgt），产生大量的哺乳动物遗骸和一些石器物。该水平是与气候最佳相对应的软体动物区域3的一部分。从哺乳动物的组合（包括河马和猕猴）推断出的古环境和气候条件加强了对哺乳动物的解释。石器业被确定为Acheulean，并且与19世纪后期的最早的斧头发现相一致。拉策勒河系的动物群属于欧洲西北部著名的MIS 11“ Lyrodiscus组合”。按时间顺序分配已通过第一个U系列辐射测量方法确认。最后，对叶子印刷品的重新评估可以与乳汁学数据一起讨论“ Lyrodiscus biome”的古气候解释。拉塞勒（La Celle）的动植物包括几棵地中海树木和几只已灭绝的腹足动物，以及中欧现代范围内的软体动物，可以描述一片森林和潮湿的景观。人们认为，法国北部这些奇特物种的存在与MIS 11的长长度和较低的季节温度差异有关，这使得南部物种能够在北部定居，而不是温度比今天更高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号