Apport des marqueurs isotopiques et biogéochimiques dans la reconstitution du paléoenvironnement de la grotte du Lazaret (Nice, Alpes-Maritimes) au cours du Pléistocène supéri

详细信息	查看全文 | 推荐本文 |

• 作者：Louis Rousseau ; Jacques Beauchamp ; Christophe Falguè ; res ; Christophe Emblanch ; Dominique Genty ; Jean-Jacques Bahain and Dominique Blamart
• 关键词：O ; C isotopes ; Sterols ; Palaeoenvironment ; Speleothem ; Pleistocene
• 刊名：Comptes Rendus Geoscience
• 出版年：2005
• 期刊代码：87_16310713
• 类别：ear
• 出版时间：2005
• 卷：337
• 期：15
• 页码：1348-1354
• 文件大小：387 K

摘要

The isotopic composition of calcite from the stalagmitic floor E of the Lazaret Cave is interpreted as proxy of atmospheric circulation and vegetal cover changes during IOS 5. The δ¹⁸O variations could indicate change in precipitation sources, which could originate from the Mediterranean Sea during warm periods and from the Atlantic Ocean during colder periods. The δ¹³C variations could be related to vegetal cover and soil type. Tree cover appears to be dominant according to pollen spectra, and organic molecules trapped into calcite (sterols, terpenoids, humic acids). To cite this article: L. Rousseau et al., C. R. Geoscience 337 (2005).