Zircon U-Pb Dating, REE and Lu-Hf Isotopic Characteristics of Paleoproterozoic Orthogneiss in Sulu UHP Terrane, East China
详细信息
- 责任者：Kong Qingbo （The 7th Geological Survey Team ; Liaoning Bureau of Geology and Mineral Exploration and Development ; Dandong 118003 ; China）
- 刊名：Geological Bulletin of China
- 出版年：2009
- 卷期：28（1）
- 关键词：花岗质片麻岩 ; granitic gneiss ; 铀—铅计时 ; U-Pb dating ; 镥—铪计时 ; Lu-Hf dating ; 苏鲁造山带 ; Su-Lu Orogenic Belt
- 页码：p.51-62
- 图表：6 illus. , 5 tables, 9 refs.
- 分类号：0802
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
///In this study, the authors link mineral inclusion data, cathodoluminescence(CL) iamge, trace element analyses, U-Pb ages and Lu-Hf isotope compositions obtained from zircons to unravel the origin and metamorphic evolution of biotite-and epidote-bearing granitic orthogneisses from the Sulu ultrahigh-pressure(UHP) terrane, eastern China. Zircon grains from granitic gneisses in Weihai (SLU1) and Taohang (SLU2) outcrops preserved mineral inclusions of quartz (Qtz) + potash feldspar (Kfs) + albite (Ab)± apatite (Ap) with pronounced magmatic CL images. Chondrite-normalized REE patterns of the analyzed zircons are characterized by significantly higher heavy rare earth element (HREE) contents, leading to steep left-facing slopes REE patterns.