Convergent margin processes during Archean-Proterozoic transition in southern India: Geochemistry and zircon U-Pb geochronology of gold-bearing amphibolites, associated metagabbros, and TTG gneisses from Nilambur
文献类型：期刊论文
| 作者 | Shaji, E.1; Santosh, M.2; He, Xiao-Fang2; Fan, Hong-Rui3; Dev, S. G. Dhanil1; Yang, Kui-Feng3; Thangal, Mifthah Koya1; Pradeepkumar, A. P.1 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 250页码:68-96 |
| 关键词 | U-Pb zircon geochronology Geochemistry Archean-Paleoproterozoic transition Nilambur Southern India |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2014.05.021 |
| 文献子类 | Article |
| 英文摘要 | The northern domain of the Southern Granulite Terrane (SGT) in India comprises a collage of Mesoarchean to Neoarchean crustal blocks which preserve important imprints of crustal growth during the early history of the Earth. Here we investigate the zircon U-Pb geochronology and geochemistry of a suite of amphibolites, metagabbros, TTG gneisses and charnockites from the Nilambur region, which forms part of the Wynad Gold Belt in the SGT. Magmatic zircons from three amphibolites yield weighted mean Pb-207/Pb-206 ages of 2661 +/- 59 Ma, 2499 +/- 19 Ma, 2570 +/- 19 Ma and 2542 +/- 49 Ma, closely followed by metamorphism at ca. 2.45 Ga. Zircons from the TTG gneisses show protolith emplacement ages of 2619 +/- 21 Ma and the overgrowth rims define an age of 2524 +/- 6 Ma. Zircons from the metagabbro show spot ages between 2576 Ma and 2717 Ma and a weighted mean Pb-206/Pb-207 age of 2644 +/- 30 Ma, with metamorphism at 2503 +/- 28 Ma. The U-Pb data suggest prominent magmatic and metamorphic events during the Archean-Proterozoic transition. |
| WOS关键词 | HIGH-PRESSURE GRANULITES ; HIGH-GRADE METAMORPHISM ; ARC MAGMAS ; VOLCANIC-ROCKS ; DHARWAR CRATON ; TRACE-ELEMENT ; CONTINENTAL GROWTH ; CRUSTAL EVOLUTION ; ND ISOTOPES ; AGE CONSTRAINTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000340308300005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government ; 1000 Talents Programme of the Chinese Government |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/85866]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Santosh, M. |
| 作者单位 | 1.Univ Kerala, Dept Geol, Trivandrum 695581, Kerala, India 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shaji, E.,Santosh, M.,He, Xiao-Fang,et al. Convergent margin processes during Archean-Proterozoic transition in southern India: Geochemistry and zircon U-Pb geochronology of gold-bearing amphibolites, associated metagabbros, and TTG gneisses from Nilambur[J]. PRECAMBRIAN RESEARCH,2014,250:68-96. |
| APA | Shaji, E..,Santosh, M..,He, Xiao-Fang.,Fan, Hong-Rui.,Dev, S. G. Dhanil.,...&Pradeepkumar, A. P..(2014).Convergent margin processes during Archean-Proterozoic transition in southern India: Geochemistry and zircon U-Pb geochronology of gold-bearing amphibolites, associated metagabbros, and TTG gneisses from Nilambur.PRECAMBRIAN RESEARCH,250,68-96. |
| MLA | Shaji, E.,et al."Convergent margin processes during Archean-Proterozoic transition in southern India: Geochemistry and zircon U-Pb geochronology of gold-bearing amphibolites, associated metagabbros, and TTG gneisses from Nilambur".PRECAMBRIAN RESEARCH 250(2014):68-96. |
入库方式： OAI收割
来源：地质与地球物理研究所
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