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| Geochronologic Constraints on the Magmatic Underplating of the Gangdisê Belt in the India-Eurasia Collision: Evidence of SHRIMP II Zircon U-Pb Dating | |
| 作者姓名： | DONG Guochen MO Xuanxue ZHAO Zhidan GUO Tieying WANG Liangliang and CHEN Tao State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing School of Earth Science and Resources China University of Geosciences Beijing E-mail: moxx@cugb.edu.cn Hebei Bureau of Geology and Mineral Exploration and Development Shijiazhuang Hebei |
| 作者单位： | DONG Guochen1，2，3，MO Xuanxue1，2，ZHAO Zhidan1，2，GUO Tieying2，WANG Liangliang1 and CHEN Tao1 1 State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences，Beijing 100083; 2 School of Earth Science and Resources，China University of Geosciences，Beijing 100083; E-mail: moxx@cugb.edu.cn 3 Hebei Bureau of Geology and Mineral Exploration and Development，Shijiazhuang，Hebei 050081 |
| 摘 要： | 1 Introduction Mo et al. (2005) determined that magma mixing and mingling took place extensively in the Gangdisê magmatic belt around 50 Ma, and argued that magma mixing was genetically related to underplating of mantle-derived magmas beneath that belt. Underplating, as one of the major mechanisms for crustal growth, can occur in the environments of convergent plate boundaries, subduction and collision zones, and in intra-plate settings such as continental flood basalt provinces (Wilson, 19… |
| 关 键 词： | SHRIMP U-Pb dating mafic intrusion gabbro underplating the Gangdisê Tibet |
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