line-level: 2" class=MsoNormal>Trace Elements and Hf Isotope Compositions and U-Pb Age of Igneous Zircons from the Triassic Granite in Lianghe, Western Yunnan

• 责任者：Cong Feng (Chengdu Center of China Geological Survey ; Chengdu 610081 ; China) ; Lin Shiliang
• 刊名：Acta Geologica Sinica
• 出版年：2010
• 卷期：84(8)
• 关键词：花岗岩 ; granite ; 铀—铅计时 ; U-Pb dating ; 云南 ; Yunnan Province
• 页码：p.1155-1164
• 图表：4 illus., 3 tables, 41 refs.
• 分类号：0801
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

Based on detailed field survey, the trace element and Hf isotope compositions and U-Pb age of zircons from granite at Lianghe in western Yunnan Province were studied. Most of the zircons exhibit magmatic oscillatory zoning, suggesting a typical magmatic origin. In particular, a zircon with two cores has been discovered, which preserved inherited core and growth zone and hydrothermal domain. The inherited cores show the similar trace element characteristics with igneous zircons. Combined with the evolution of geotectonic, it is suggested that the granites were crust-derived magmas and maybe emplaced at a post-collision extensional setting.