Formation and evolution of the Paleoproterozoic meta-mafic and associated supracrustal rocks from the Lushan Taihua Complex, southern North China Craton: Insights from zircon U-Pb geochronology and whole-rock geochemistry

doi:10.1016/j.precamres.2017.05.018

	Formation and evolution of the Paleoproterozoic meta-mafic and associated supracrustal rocks from the Lushan Taihua Complex, southern North China Craton: Insights from zircon U-Pb geochronology and whole-rock geochemistry
	Sun, Qianying 1,2; Zhou, Yanyan 3; Wang, Wei 4; Li, Chengdong 5; Zhao, Taiping 1
刊名	PRECAMBRIAN RESEARCH
	2017-12-01
卷号	303 页码:428-444
关键词	North China Craton Lushan Taihua Complex Geochronology Geochemistry Paleoproterozoic
ISSN号	0301-9268
DOI	10.1016/j.precamres.2017.05.018
文献子类	Article
英文摘要	The Upper Taihua Complex in the Lushan area is one of the best preserved Paleoproterozoic metamorphic basements exposed in the southern North China Craton, which is mainly composed of Khondalite-dominated supracrustal rocks and associated meta-mafic intrusions (amphibolites) and granitic plutons. Detrital zircon U-Pb ages of four paragneisses from the supracrustal rocks can be divided into two groups: 2.39-2.10 Ga and 1.97-1.83 Ga. Concordant Pb-207/Pb-20S ages from the older group show typical magmatic features with a distinct peak around 2.31-2.23 Ga, whereas the metamorphic zircons define a remarkable age peak at similar to 1.93 Ga. Magmatic zircons from the amphibolite sample have a weighted mean Pb-207/Pb-206 age of 2128 +/- 29 Ma, representing the crystallization age of the protolith. Therefore, the depositional age of the supracrustal rocks in the Upper Taihua Complex can be well constrained at similar to 2.23-2.13 Ga. Geochemically, the amphibolites are classified as subalkaline high-Fe tholeiitic basalts in compositions and characterized by slightly enrichment in LREE, flat HREE and weakly negative Eu anomalies, with depleted high field strength elements (e.g., Nb, Ta, and Ti), inconsistent with typical rocks derived from the asthenospheric mantle. The high FeOT (>13.59wt%), CaO (>6.67wt%), low Al2O3 (<13.09wt%), Th (<3.09 ppm), and lack of correlation between epsilon(Nd)(t) values and crustal contamination sensitive elements suggest that crustal assimilation was limited during magma evolution. The varied epsilon(Nd)(t) values (-2.99 to +0.44) and Nd model ages (2.65-2.98 Ga) suggest that they were likely originated from Archean subcontinental lithospheric mantle (SCLM) which have been refertilized by metasomatic processes. These geochronological and geochemical signatures indicate the meta-mafic rocks and associated supracrustal rocks of the Upper Taihua Complex in the Lushan area were most likely formed in an intra-continental rift setting, implying the extensional tectonic scenario rather than subduction-related regime occurred between similar to 2.2 and 2.0 Ga at least in the southern margin of the NCC. Metamorphic ages suggest that the Taihua Complex in the Lushan area was involved in subduction-collision processes from 1.97 Ga to 1.83 Ga. (c) 2017 Elsevier B.V. All rights reserved.
WOS关键词	SUBDUCTION ZONE PROCESSES ; HF ISOTOPIC COMPOSITIONS ; WUTAI MOUNTAINS AREA ; LIAO-JI BELT ; TECTONIC EVOLUTION ; HENAN PROVINCE ; LU-HF ; ZANHUANG COMPLEX ; TRACE-ELEMENT ; METAMORPHIC EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000423004300023
资助机构	National Natural Science Foundation of China(41573041) ; National Natural Science Foundation of China(41573041) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; National Natural Science Foundation of China(41573041) ; National Natural Science Foundation of China(41573041) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; National Natural Science Foundation of China(41573041) ; National Natural Science Foundation of China(41573041) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; National Natural Science Foundation of China(41573041) ; National Natural Science Foundation of China(41573041) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900) ; Geological Research Program from Tianjin Institute of Geology and Mineral Resources(12120113060900)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82532]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, Taiping
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China 5.Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China
推荐引用方式 GB/T 7714	Sun, Qianying,Zhou, Yanyan,Wang, Wei,et al. Formation and evolution of the Paleoproterozoic meta-mafic and associated supracrustal rocks from the Lushan Taihua Complex, southern North China Craton: Insights from zircon U-Pb geochronology and whole-rock geochemistry[J]. PRECAMBRIAN RESEARCH,2017,303:428-444.
APA	Sun, Qianying,Zhou, Yanyan,Wang, Wei,Li, Chengdong,&Zhao, Taiping.(2017).Formation and evolution of the Paleoproterozoic meta-mafic and associated supracrustal rocks from the Lushan Taihua Complex, southern North China Craton: Insights from zircon U-Pb geochronology and whole-rock geochemistry.PRECAMBRIAN RESEARCH,303,428-444.
MLA	Sun, Qianying,et al."Formation and evolution of the Paleoproterozoic meta-mafic and associated supracrustal rocks from the Lushan Taihua Complex, southern North China Craton: Insights from zircon U-Pb geochronology and whole-rock geochemistry".PRECAMBRIAN RESEARCH 303(2017):428-444.