India-Eurasia plate convergence and environmental consequences

印度-欧亚板块趋同和环境后果

• 批准号: 68666821
• 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/68666821?language=en
• 关键词: India; Eurasia; plate; convergence; environmental

The project is addressed to the India-Eurasia collision from its earliest stage to the end of the marine sedimentary history during the Early Eocene. Stratigraphic timing of the early history of the India-Eurasia collision, the pre-collisional extent of the plate margins and their character as well as the continental masses involved are important preconditions in all models for the evolution of the Himalaya-Tibetan orogenic system and for the subsequent uplift of the Tibetan Plateau. Using palaeomagnetic inclinations combined with precise datings by biostratigraphy (sediments) and radiometry (volcanics) allow to determine the extent of India’s former northern margin (‘Greater India’) and the southern position of the Eurasian continent. Furthermore, studying the narrowing and finally the closure of the Neo- Tethyan Ocean profoundly enhances our understanding of regional shiftings of ocean current systems, distribution of SST and the global climate change during the Cenozoic. We will continue our studies on the history of plate convergence and collision in sedimentary sections of the Himalayan peripheral foreland basin which developed when India and Asia collided, named the Tethys-Himalaya Zone of southern Tibet (locations Guru – Gamba – Tingri) and volcanic rocks on the Lhasa Block.

该项目是针对印度-欧亚大陆碰撞从其最早阶段结束的海洋沉积历史在早始新世。印度-欧亚大陆碰撞早期历史的地层时代、碰撞前板块边缘的范围和性质以及所涉及的大陆块体是喜马拉雅-青藏造山系统演化和随后青藏高原隆升的所有模式的重要前提。利用古地磁倾角结合生物地层学（沉积物）和放射性测量（火山岩）的精确测年，可以确定印度前北方边缘（“大印度”）的范围和欧亚大陆的南部位置。研究新特提斯洋的缩窄和最终闭合，可以加深我们对新生代洋流系统的区域性变化、海温分布和全球气候变化的认识。我们将继续在印度和亚洲碰撞时形成的喜马拉雅周缘前陆盆地的沉积剖面，即藏南特提斯-喜马拉雅带（古鲁-岗巴-定日）和拉萨地块的火山岩中研究板块会聚和碰撞的历史。

项目成果

Initial India-Asia Continental Collision and Foreland Basin Evolution in the Tethyan Himalaya of Tibet: Evidence from Stratigraphy and Paleontology

• DOI: 10.1086/663876
• 发表时间: 2012-03
• 期刊: The Journal of Geology
• 作者: Qinghai Zhang;H. Willems;L. Ding;K. Gräfe;E. Appel