U-Pb Dating and Hf Isotopic Compositions of Quartz Diorite and Monzonitic Granite from the Tengchong-Lianghe Block, Western Yunnan Province, and Its Geological Implications
详细信息
- 责任者：Li Zaihui (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Lin Shiliang
- 刊名：Acta Geologica Sinica
- 出版年：2012
- 卷期：86(7)
- 关键词：石英闪长岩 ; quartz diorite ; 二长花岗岩 ; monzogranite ; 同位素年龄 ; isotope age ; 云南 ; Yunnan Province
- 页码：p.1047-1062
- 图表：11 illus., 4 tables, 96 refs.
- 分类号：0801
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
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mal>man’,’serif’" lang=EN-US>The Tengcong-Lianghe magmatic belt is the eastward extension of the Gangdise granite belt. Gabbro-diorite enclaves, granite, and quartz diorites in the Tengcong-Lianghe area have close spatial and temporal relationship. Morphological, structural, textural and mineralogical characteristics of gabbro-diorite enclaves indicate that these enclaves were the products of rapid condensation and crystallization of the intermediate and mafic magmas. Geochemical data show that the gabbro-diorite enclaves are calc-alkaline series. Zircon LA-ICP-MS dating indicates that the quartz diorites and monzonitic granites were emplaced at (127. 10
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