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Late Neogene environmental evolution of the Tibetan Plateau recorded in long-term lacustrine archives

长期湖泊档案记录的青藏高原新近纪晚期环境演化

基本信息

批准号：
69077242
负责人：
Professor Dr. Erwin Appel
金额：
--
依托单位：
Arbeitsgruppe Geophysik
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2014-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/69077242?language=en
关键词：
Late Neogene environmental evolution Tibetan

项目摘要

Knowledge about the long-term history of the Asian monsoon climate is a prerequisite for better understanding regional- and global-scale climate change during the late Neogene and its link to the tectonic evolution and uplift of the Tibetan Plateau. Here we propose to continue our running multidisciplinary study on lacustrine deposits in Tibet; we focus on the Qaidam basin (NE plateau), which contains a unique record of aridification in central Asia. A 1400 m deep drill-core (SG-1: 940 m recovered in 2008, 1400 m to be reached in April 2010) and a surface profile provide a continuous sedimentary archive spanning the last ~8 Myr. For the future, we anticipate considerable synergy to result from a second drilling campaign (SG- 2) into an anticline structure nearby SG-1 that is planned by the same group within a launched BMBF program (1400 m: ~8-15 Ma). Integrating the results from the Qaidam basin with other data available from different areas of the Tibetan Plateau (Zada: ~9-1 Ma, Cuo’e: last ~2.8 Ma, Heqing and Zoîge: both last ~1 Ma) will allow us to conduct a comprehensive analysis of palaeoclimate proxies and related tectonic activities. The project is carried out in close cooperation by German and Chinese partners based on equal scientific work share, and bilateral financial support by the DFG, BMBF (German side), CAS, NSFC, and MST (Chinese side).

了解亚洲季风气候的长期历史是更好地了解新近纪晚期区域和全球尺度气候变化及其与青藏高原构造演化和隆升的联系的先决条件。在此，我们建议继续开展西藏湖泊沉积物的多学科研究；我们重点关注柴达木盆地（高原东北部），这里有着中亚独特的干旱化记录。 1400 m 深的钻芯（SG-1：2008 年回收了 940 m，2010 年 4 月将达到 1400 m）和地表剖面提供了跨越最后约 8 Myr 的连续沉积档案。对于未来，我们预计对 SG-1 附近的背斜结构进行第二次钻探活动 (SG-2) 将产生相当大的协同作用，该钻探活动是由同一小组在已启动的 BMBF 计划（1400 m：~8-15 Ma）中规划的。将柴达木盆地的结果与青藏高原不同地区的其他数据（扎达：~9-1 Ma，措鄂：最后~2.8 Ma，鹤庆和若尔盖：最后~1 Ma）相结合，将使我们能够对古气候代理和相关构造活动进行综合分析。该项目由德国和中国合作伙伴在平等科学工作份额的基础上密切合作开展，并得到 DFG、BMBF（德方）、CAS、NSFC 和 MST（中方）的双边资金支持。