Middle Cenozoic Plate Boundary between the Indian Plate and South China/Indochina

印度板块与华南/印度支那之间的中新生代板块边界

• 批准号: 9814867
• 负责人: B. Clark Burchfiel
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-12-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814867&HistoricalAwards=false
• 关键词: Middle; Cenozoic; Plate; Boundary; between

9814867Burchfiel The middle Cenozoic post-collisional northward motion of India relative to Eurasia and South China was accommodated in a variety of ways, and has been extensively studied along the northern boundary. The eastern boundary is more complex because it is an area where the strain field has evolved rapidly with large magnitude clockwise rotations and limited SE extrusion. This project will test the hypothesis that crustal fragments between the Gaolingong shear zone, which accommodates most of northward movement of Indian along the eastern margin, and two NW-trending faults were vertically extruded by transpression tectonics. This study will provide basic data on the structural evolution of the neglected eastern plate boundary of the India-Erasia convergent system. On a larger scale, this study will contribute to how the India/Eurasia system on the west interacts with the Pacific/Eruasian system on the east during middle Cenozoic time.

9814867Burchfiel 印度相对于欧亚大陆和华南的中新生代碰撞后向北运动以多种方式得到调节，并沿北部边界进行了广泛的研究。 东部边界更为复杂，因为该区域应变场演化迅速，顺时针旋转幅度较大，东南方向挤压有限。 该项目将验证高林宫剪切带（容纳了印度沿东缘向北运动的大部分）和两条北西向断层之间的地壳碎片受到压扭构造垂直挤压的假设。 这项研究将为被忽视的印度-埃拉西亚聚合体系东部板块边界的结构演化提供基础数据。 在更大的范围内，这项研究将有助于了解新生代中期西部的印度/欧亚体系与东部的太平洋/欧亚体系如何相互作用。