Sm-Nd Isotopic Ages of Basic Rocks in Kudi Ophiolite of
详细信息
- 责任者：Fang Aimin (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Li Jiliang
- 刊名：Chinese Journal of Geology
- 出版年：2010
- 卷期：45(1)
- 关键词：蛇绿岩 ; ophiolite ; 钐—钕计时 ; Sm-Nd dating ; 昆仑山 ; Kunlun Mountains
- 页码：p.113-121
- 图表：2 illus., 2 tables, 42 refs.
- 分类号：0801
- issnNo：ISSN0563-5020
- isbnNo：CN11-1937/P
摘要
The Kudi ophiolite is the north most suture zone in the Tibetan Plateau，and it was considered to be the remnant of the Paleo-Tethys. Isotopic and radiolarian ages on different components of Kudi ophiolite and its associated rocks by former researchers are summarized and analyzed. By using Sm/Nd isotopic chronological dating，two Late Protozoic ages of the basic rocks of Kudi ophiolite， 1 023±51 and 834±29 Ma，respectively，were obtained. On the basis of further discussion on the formation of Kudi ophiolite，the authors considered that these ages might represent the time period of the subduction of Kudi ocean.