Magma Mixing of Late Early Jurassic Age from Nyainrong,
详细信息
- 责任者：Liu Min (State Key Laboratory of Geological Processes and Mineral Resources ; School of Earth Science and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhu Dicheng
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(10)
- 关键词：岩浆作用 ; igneous processes ; 混合作用 ; hybridization ; 西藏 ; Tibet
- 页码：p.3117-3130
- 图表：4 illus., 3 tables, 59 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The nature of magma source region and petrogenesis of the Nyainrong pluton in northern Tibet remain poorly constrained, consequently raising uncertainties for understanding the tectonomagmatic evolution of the Bangong-Nujiang suture zone during the Early Jurassic. To explore these issues, this paper reports the petrological, whole-rock geochemical, zircon U-Pb dating, and zircon Lu-Hf isotopic data of host granites and dioritic enclaves from the Nyainrong pluton. The results imply in turn that the Bangong-Nujiang Ocean seafloors may have subducted southward towards beneath the Lhasa Terrane and also subducted northward towards beneath the Qiangtang Terrane.