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Formation age and tectonic setting of the Shirengou Neoarchean banded iron deposit in eastern Hebei Province: Constraints from geochemistry and SIMS zircon U-Pb dating

文献类型：期刊论文

作者Zhang, Lianchang1; Zhai, Mingguo1; Zhang, Xiaojing1; Xiang, Peng1; Dai, Yanpei1; Wang, Changle1; Pirajno, Franco2
刊名PRECAMBRIAN RESEARCH
出版日期2012-12-01
卷号222页码:325-338
关键词Neoarchean BIF Algoma-type iron deposit SIMS zircon U-Pb dating SIMS zircon oxygen isotope Tectonic setting
ISSN号0301-9268
DOI10.1016/j.precamres.2011.09.007
文献子类Article
英文摘要The Shirengou iron deposit, a typical BIF deposit located in eastern Hebei province in the North China Craton, is hosted in Neoarchean metamorphic rocks. The metamorphic rocks include hornblende plagiogneiss, plagioclase amphibolite and magnetite quartzite. We use contents and ratios of major elements for protolith reconstruction, showing that protoliths of the hornblende plagiogneiss and plagioclase amphibolite should be dacite and basaltic andesite, respectively. Based on geology and geochemistry of the hosting rocks, we infer that the Shirengou BIF is an Algoma type deposit formed in an arc-related basin in the Neoarchean. Constrains from SIMS U-Pb dating and oxygen isotopic analysis of zircon from wall-rocks and interlayer of the Shirengou iron bodies can be summarized as follow: (1) igneous zircons from two samples of amphibolite and gneiss yield U-Pb ages of 2541 +/- 21 Ma and 2553 +/- 31 Ma, respectively, providing the age of the Neoarchean protolith. Because the Shirengou BIF is an Algoma-type deposit, determined U-Pb age (2541-2553 Ma) for zircons from hosting volcanic rocks can constrain the BIF-forming time. (2) Metamorphic overgrowth zircons from amphibolite and gneiss give two U-Pb ages of 2512 +/- 13 Ma and 2510 +/- 21 Ma, respectively, corresponding to the Neoarchean matemorphism. (3) The zircons with delta O-18 values of 5.9-7.6 parts per thousand also indicate magmatic origin. The zircons have delta O-18 values of 6.8-9.9 parts per thousand, suggesting that exotic high delta O-18 fluids were involved during metamorphism. Based on the geology and geochemistry of BIF, and combing with zircon age and oxygen isotopic systematics, we suggest that the Shirengou iron deposit was formed in a submarine volcanic setting related to subduction of an oceanic slab. Crown Copyright (c) 2011 Published by Elsevier B.V. All rights reserved.
WOS关键词NORTH CHINA CRATON ; KALAHARI MANGANESE FIELD ; WESTERN BLOCK ; DETRITAL ZIRCONS ; PALEOPROTEROZOIC EVOLUTION ; METAMORPHIC EVOLUTION ; COMPLEX CONSTRAINS ; CRUSTAL EVOLUTION ; THERMAL EVOLUTION ; KHONDALITE BELT
WOS研究方向Geology
语种英语
WOS记录号WOS:000313765700017
出版者ELSEVIER SCIENCE BV
资助机构Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-Q04-07)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84286]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Lianchang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Western Australia, Sch Earth & Environm, Crawley 6005, Australia
推荐引用方式
GB/T 7714		 Zhang, Lianchang,Zhai, Mingguo,Zhang, Xiaojing,et al. Formation age and tectonic setting of the Shirengou Neoarchean banded iron deposit in eastern Hebei Province: Constraints from geochemistry and SIMS zircon U-Pb dating[J]. PRECAMBRIAN RESEARCH,2012,222:325-338.
APA Zhang, Lianchang.,Zhai, Mingguo.,Zhang, Xiaojing.,Xiang, Peng.,Dai, Yanpei.,...&Pirajno, Franco.(2012).Formation age and tectonic setting of the Shirengou Neoarchean banded iron deposit in eastern Hebei Province: Constraints from geochemistry and SIMS zircon U-Pb dating.PRECAMBRIAN RESEARCH,222,325-338.
MLA Zhang, Lianchang,et al."Formation age and tectonic setting of the Shirengou Neoarchean banded iron deposit in eastern Hebei Province: Constraints from geochemistry and SIMS zircon U-Pb dating".PRECAMBRIAN RESEARCH 222(2012):325-338.

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来源：地质与地球物理研究所

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