中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
Genesis of early cretaceous leucogranites in the Central Sanandaj-Sirjan zone, Iran: Reworking of Neoproterozoic metasedimentary rocks in an active continental margin

文献类型：期刊论文

作者Shakerardakani, Farzaneh4,5; Li, Xian-Hua3,4,5; Neubauer, Franz2; Ling, Xiao-Xiao4,5; Li, Jiao4,5; Monfaredi, Behzad1; Wu, Li-Guang3,4,5
刊名LITHOS
出版日期2020
卷号352页码:17
关键词U-Pb zircon geochronology Hf-O isotopes Leucogranite Flat-slab subduction Sanandaj-Sirjan zone Iran
ISSN号0024-4937
DOI10.1016/j.lithos.2019.105330
英文摘要New U-Pb ages and geochemical and isotopic data from leucogranites within the central Sanandaj-Sirjan zone (SSZ) of the Zagros orogen in Iran enable an evaluation of a migrating magmatic system in response to subduction of Neo-Tethyan lithosphere. The Esfajerd leucogranites, from the Golpaygan region of the Muteh-Golpaygan metamorphic complex, are composed mainly of tourmaline and two-mica leucogranites and are characterized by strongly peraluminous compositions. SIMS U-Pb zircon ages indicate that these rocks were emplaced over a 7 Myr period between 138 and 131 Ma. In multi-element variation diagrams, all samples display pronounced negative Eu anomalies, enrichment in light rare-earth elements and large-ion lithophile elements, and depletion in high-field-strength elements, Sr, and Ba. The tourmaline and two-mica leucogranites record positive zircon epsilon Hf values of 1.7-5.6 and 23-8.9, respectively, suggesting a predominantly Neoproterozoic crustal source. Zircon Hf-O isotopic compositions, together with the whole-rock geochemical data, show that both leucogranite types were produced by muscovite dehydration melting of metasedimentary sources under fluid-absent conditions, followed by fractional crystallization of the parental melt. The relatively high delta O-18 values (8.68-1032%.) of the tourmaline leucogranites are consistent with their derivation from a psammite-dominated source, such as metagraywackes, whereas the wider range and higher maximum of the delta O-18 values (6.99-1232%.) of the two-mica leucogranites correspond to mixed pelitic-psammitic sources, with little or no input of mantle-derived material. We suggest that the leucogranites were formed by melting of metasedimentary rocks during a stage of flat-slab subduction initiated by plate reorganization. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词ZIRCON U-PB ; TRONDHJEMITE-GRANODIORITE TTG ; HF ISOTOPIC CONSTRAINTS ; ZAGROS OROGENIC BELT ; S-TYPE GRANITES ; CALC-ALKALINE ; GEOCHEMICAL CONSTRAINTS ; TECTONIC EVOLUTION ; OXYGEN ISOTOPES ; IGNEOUS ROCKS
资助项目Chinese Academy of Sciences[XDB18030000] ; Chinese Academy of Sciences[QYZDY-SSW-DQC017]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000515201500032
出版者ELSEVIER
资助机构Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/95614]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Shakerardakani, Farzaneh; Li, Xian-Hua
作者单位1.Karl Franzens Univ Graz, NAWI Graz Geoctr, Dept Petrol & Geochem, Univ Pl 2, A-8010 Graz, Austria
2.Paris Lodron Univ Salzburg, Dept Geog & Geol, Hellbrunner Str 34, A-5020 Salzburg, Austria
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Shakerardakani, Farzaneh,Li, Xian-Hua,Neubauer, Franz,et al. Genesis of early cretaceous leucogranites in the Central Sanandaj-Sirjan zone, Iran: Reworking of Neoproterozoic metasedimentary rocks in an active continental margin[J]. LITHOS,2020,352:17.
APA Shakerardakani, Farzaneh.,Li, Xian-Hua.,Neubauer, Franz.,Ling, Xiao-Xiao.,Li, Jiao.,...&Wu, Li-Guang.(2020).Genesis of early cretaceous leucogranites in the Central Sanandaj-Sirjan zone, Iran: Reworking of Neoproterozoic metasedimentary rocks in an active continental margin.LITHOS,352,17.
MLA Shakerardakani, Farzaneh,et al."Genesis of early cretaceous leucogranites in the Central Sanandaj-Sirjan zone, Iran: Reworking of Neoproterozoic metasedimentary rocks in an active continental margin".LITHOS 352(2020):17.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。