Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U-Pb dating

doi:10.1016/j.jseaes.2014.05.019

	Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U-Pb dating
	Cui, Minli 1,2; Zhang, Lianchang 1; Wu, Huaying 3; Xu, Yingxia 4; Li, Wenjun 1
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2014-11-01
卷号	94 页码:240-251
关键词	Banded iron formation Iron ore deposits SIMS zircon U-Pb dating Tectonic setting North China Craton
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2014.05.019
文献子类	Article
英文摘要	The North China Craton (NCC), one of the oldest continental blocks in Asia, has a complicated evolutionary history with the age of the old crust up to 3.8 Ga and records the important geological events of the Earth. The Sijiaying BIF, the largest banded iron formation located in eastern Hebei province, in the east part of NCC, records an important thermo-tectonic event; Previous studies focused on the geological description, but the timing and tectonic setting have been unclear so far. The Sijiaying BIF is hosted in Neoarchean metamorphic rocks, which includes biotite-leptynite, hornblende plagioclase-gneiss and biotite plagioclase-gneiss. Using major element contents and ratios of the host rocks, the protoliths of the hornblende plagioclase-gneiss and biotite plagioclase-gneiss are shown to be dacite, whereas those of the biotite-leptynites are sedimentary rocks. Based on geology and geochemistry of the host rocks, we infer that the Sijiaying BIF is an Algoma type deposit. SIMS zircon U-Pb dating shows: igneous zircons from the biotite plagioclase-gneiss and hornblende plagioclase-gneiss have U-Pb ages of 2535 +/- 8 Ma and 2543 +/- 14 Ma, respectively; zircons from the biotite-leptynite have an age of 2537 +/- 13 Ma. We infer that the ages of 2543-2535 Ma represent the time of the Sijiaying BIF. PAAS-normalized REY profiles of the ore samples are characterized by LREE depletion and HREE enrichment, positive La and Eu anomalies and an average Y/Ho weight ratio of 32, indicating a mixture of submarine hydrothermal fluids and deep seawater. REE data was combined with the delta O-18 analyzed by previous researcher of the ore from individual magnetite bands to infer that the Sijiaying BIF precipitated from hydrothermal fluids discharging on the sea floor. The hornblende plagioclase-gneiss and biotite plagioclase-gneiss that are enriched in LILE and LREE and depleted in high field strength elements (HFSE) Nb, Ta and Ti, have geochemical signatures that are similar to those of island-arc volcanic rocks. The biotite-leptynite shows the characteristics of continental island-arc. Based on the geology and geochemistry of associated wall-rocks and ore samples, we suggest that the Sijiaying BIF formed in a back-arc basin in Neoarchean. (C) 2014 Elsevier Ltd. All rights reserved.
WOS关键词	RARE-EARTH-ELEMENTS ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; TRACE-ELEMENT ; SCHIST BELT ; TH-PB ; EVOLUTION ; AGE ; SUPERCONTINENT ; CHEMISTRY ; SEDIMENTS
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000343351000018
资助机构	Major State Basic Research Program of the People's Republic of China(2012CB416601) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; 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) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; 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) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; 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) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; Major State Basic Research Program of the People's Republic of China(2012CB416601) ; 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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84866]
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.China Geol Survey, Res Dev Ctr, Beijing 100037, Peoples R China 3.China Met Geol Bur, Inst Mineral Resources Res, Beijing 100025, Peoples R China 4.Hebei United Univ, Coll Min Engn, Tangshan 063009, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Cui, Minli,Zhang, Lianchang,Wu, Huaying,et al. Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U-Pb dating[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,94:240-251.
APA	Cui, Minli,Zhang, Lianchang,Wu, Huaying,Xu, Yingxia,&Li, Wenjun.(2014).Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U-Pb dating.JOURNAL OF ASIAN EARTH SCIENCES,94,240-251.
MLA	Cui, Minli,et al."Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U-Pb dating".JOURNAL OF ASIAN EARTH SCIENCES 94(2014):240-251.