Structure Features of the Middle Yarlung Zangbo Suture Zone and a New Knowledge of Its Genetic Model
详细信息
- 责任者：Sun Dong (Institute of Sedimentary Geology Chengdu University of Technology ; Chengdu 610059 ; China) ; Wang Daoyong
- 刊名：Acta Geologica Sinica
- 出版年：2011
- 卷期：85(1)
- 关键词：构造模式 ; structural models ; 缝合线 ; stylolites ; 雅鲁藏布江 ; Yarlung Zangbo River
- 页码：p.56-65
- 图表：10 illus., 33 refs.
- 分类号：0300
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
The ophiolite in the Yarlung Zangbo Suture Zone displays different forms with different areas in southern Tibet. The research on tectonic characteristics and the composite feature of ophiolite in the middle Suture Zone shows that the northern edge of the continental crust on the Indian Plate has an overall wavy boundary with two nodes protruding respectively at the east and west of the zone and arc-shaped boundary in the south especially at the convergence point of two structures. The boundary conditions of this kind led to closure of the Neo-Tethys Ocean initially the two protruding nodes during the process of subduction and collision of the Neo-Tethys Ocean, resulting in the collision between southern and northern continents. The oceanic crust located between the two nodes spread southward to the arc-shape boundary from the nodes, giving rise to the closure among oceanic crusts and continental collision.