中国科学院机构知识库网格系统: Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks"

Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks"

文献类型：期刊论文


作者	Lan, Ting-Guang 1,2; Fan, Hong-Rui 1; Hu, Fang-Fang 1; Yang, Kui-Feng 1; Cai, Ya-Chun 1; Liu, Yong-Sheng 3
刊名	ORE GEOLOGY REVIEWS
出版日期	2014-12-01
卷号	63 页码:444-464
关键词	Banded iron formation Metamorphic wallrock Protolith Paleoproterozoic Continental rift North China Craton
ISSN号	0169-1368
DOI	10.1016/j.oregeorev.2014.06.003
文献子类	Reprint
英文摘要	The Changyi banded iron formation (BIF) in the eastern North China Craton (NCC) occurs within the Paleoproterozoic Fenzishan Group. Three types of metamorphic wallrocks interbedded with the BIF bands are identified, including plagioclase gneisses and leptynites, garnet-bearing gneisses and amphibolites. Protolith reconstruction suggests that the protoliths of the plagioclase gneisses and leptynites are mainly graywackes with minor contribution of pelitic materials, the garnet-bearing gneisses are Fe-rich pelites contaminated by clastics, and the amphibolites are tholeiitic rocks. Trace elements of La, Th, Sc and Zr of the plagioclase gneisses and leptynites and the garnet-bearing gneisses support that these meta-sedimentary rocks were probably derived from recycling of Archean rocks with felsic and mafic materials differentiated into different rock types. Pb-207/Pb-206 ages of detrital zircons from the meta-sedimentary rocks concentrate at 2.7-3.0 Ga, confirming their derivation from the Archean rocks. The presence of several Paleoproterozoic detrital zircons (2240 to 2246 Ma), however, also suggests minor involvement of Paleoproterozoic materials. The Archean detrital zircons have epsilon(Hf)(t) values varying from 0.7 to 7.6, which mainly fall between the 3.0 Ga and 3.3 Ga average crustal evolution lines on the age vs. epsilon(Hf)(t) diagram, further illustrating that the rocks providing materials for the meta-sedimentary rocks mainly originated from partial melting of a Mesoarchean crust. This is strongly supported by their crust-like trace element distribution patterns (such as Nb, Ta, P and Ti depletion) and ancient Nd depleted mantle model ages (T-DM = 2.9-3.4 Ga). In addition, the remarkably high epsilon(Hf)(t) values (7.5 to 9.3) of the Paleoproterozoic detrital zircons constrain the Paleoproterozoic materials to originate from a depleted mantle. The amphibolites show low SiO2 (46.5 to 52.8 wt.%) and high MgO (5.68 to 10.9 wt.%) contents, crust-like trace element features and low epsilon(Nd)(t) values (-4.5 to -0.3), suggesting that these ortho-metamorphic rocks were mainly derived from subcontinental lithospheric mantle with some contamination by Archean crustal materials. Since an intra-continental environment was required for the formation of the above metamorphic rocks, these rocks not only confine the depositional environment of the Changyi BIF to be an intra-continental rift, but also support the rifting processes of the eastern NCC during Paleoproterozoic. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	RARE-EARTH-ELEMENTS ; ZIRCON U-PB ; BANDED IRON-FORMATIONS ; HIGH-GRADE METAMORPHISM ; LIAO-JI BELT ; VOLCANIC-ROCKS ; LU-HF ; CRUSTAL EVOLUTION ; TRACE-ELEMENTS ; SOUTH-AFRICA
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
语种	英语
WOS记录号	WOS:000340975300030
出版者	ELSEVIER SCIENCE BV
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85278]
专题	中国科学院地质与地球物理研究所
通讯作者	Lan, Ting-Guang
作者单位	1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550002, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Lan, Ting-Guang,Fan, Hong-Rui,Hu, Fang-Fang,et al. Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks"[J]. ORE GEOLOGY REVIEWS,2014,63:444-464.
APA	Lan, Ting-Guang,Fan, Hong-Rui,Hu, Fang-Fang,Yang, Kui-Feng,Cai, Ya-Chun,&Liu, Yong-Sheng.(2014).Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks".ORE GEOLOGY REVIEWS,63,444-464.
MLA	Lan, Ting-Guang,et al."Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks"".ORE GEOLOGY REVIEWS 63(2014):444-464.

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来源：地质与地球物理研究所

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Reprint of "Depositional environment and tectonic implications of the Paleoproterozoic BIF in Changyi area, eastern North China Craton: Evidence from geochronology and geochemistry of the metamorphic wallrocks"

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