Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle

doi:10.1016/j.lithos.2009.01.008

	Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle
	Zhang, Shuan-Hong 1,2; Zhao, Yue 1; Liu, Xiao-Chun 1; Liu, Dun-Yi 2; Chen, Fukun 3; Xie, Lie-Wen 3; Chen, Hai-Hong 4
刊名	LITHOS
	2009-06-01
卷号	110 期号:1-4 页码:229-246
关键词	Mafic-ultramafic complex Zircon U-Pb dating Sr-Nd-Hf isotopes Subcontinental lithospheric mantle Lithosphere destruction and thinning Delamination North China Block (NCB)
ISSN号	0024-4937
DOI	10.1016/j.lithos.2009.01.008
文献子类	Article
英文摘要	The Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block (NCB) are used to constrain the isotopic composition and evolution of mantle reservoirs during different tectonic stages prior to the initiation of lithosphere destruction in the Late Mesozoic. Zircon U-Pb ages show that emplacement of the mafic-ultramafic complexes occurred in at least three stages: Middle Devonian (ca. 395 Ma), Late Carboniferous-Early Permian (308-276 Ma) and Triassic (250-220 Ma). Most of the Middle Devonian complexes display low initial (87)Sr/(86)Sr ratios of 0.70467-0.70492, weak to moderate negative epsilon(Nd) (t) values from -6.3 to -1.5 and weakly negative to weakly positive zircon epsilon(Hf)(t) values from -11.5 to 5.5, indicating that the parent magma was derived from slightly enriched lithospheric mantle. The Late Carboniferous-Early Permian complexes are characterized by low initial 87Sr/86Sr ratios of 0.70521-0.70604, significant negative epsilon(Nd)(t) values from -14.1 to -9.3 and zircon epsilon(Hf)(t) values from -17.0 to -10.5, and were probably derived from metasomatized lithospheric mantle. The Early Triassic complexes exhibit initial (87)Sr/(86)Sr ratios of 0.70656-0.70825 and significant negative epsilon(Nd)(t) values from -17.1 to -8.2, indicating their derivation from enriched lithospheric mantle. However, the Late Triassic mafic-ultramafic complexes display weakly negative to weakly positive epsilon(Nd)(t) Values of -4.4 to 0.5 and zircon epsilon(Hf)(t) Values from -2.9 to 1.7, indicating that magma sources likely resulted from mixing of depleted asthenospheric mantle and enriched lithospheric mantle. Zircon ages, geochemistry and Sr-Nd-Hf isotopic Studies suggest that the lithospheric mantle beneath the northern NCB had a slightly enriched signature during the Middle Devonian, but it became significantly enriched during the Late Carboniferous to Early Permian due to metasomatism of lithospheric mantle during the southward subduction of the Paleo-Asian oceanic plate. After final closure of the Paleo-Asian Ocean and amalgamation of the Mongolian arc terranes with the northern NCB in the latest Permian to earliest Triassic, enriched lithospheric mantle still existed beneath the northern NCB during the Early Triassic. However, in the Late Triassic involvement of asthenospheric mantle became significant, owing to strong upwelling of asthenospheric mantle and post-collisional lithospheric delamination in the Early-Late Triassic. These results suggest that the cratonic lithospheric mantle beneath the northern NCB underwent multiple stages of modification prior to its destruction and thinning. Initiation of lithospheric destruction and thinning in the northern NCB likely occurred during the Early-Late Triassic, which is much earlier than in other parts of the NCB, where it occurred in the Late Mesozoic. It appears likely that lithospheric destruction and thinning of the NCB initially started at the northern and eastern margins of the craton as a result of post-collisional lithospheric delamination, and then spread to the interior of the craton. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词	U-PB GEOCHRONOLOGY ; HF ISOTOPIC COMPOSITION ; ASIAN OROGENIC BELT ; TECTONIC EVOLUTION ; INNER-MONGOLIA ; TRACE-ELEMENT ; LU-HF ; GEOCHEMICAL CONSTRAINTS ; ZIRCON AGE ; SW CHINA
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000266541500016
资助机构	National Natural Science Foundation of China(40772144 ; National Natural Science Foundation of China(40772144 ; Institute of Geomechanics(DZLXJK200704) ; Institute of Geomechanics(DZLXJK200704) ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; 40402018) ; 40402018) ; National Natural Science Foundation of China(40772144 ; National Natural Science Foundation of China(40772144 ; Institute of Geomechanics(DZLXJK200704) ; Institute of Geomechanics(DZLXJK200704) ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; 40402018) ; 40402018) ; National Natural Science Foundation of China(40772144 ; National Natural Science Foundation of China(40772144 ; Institute of Geomechanics(DZLXJK200704) ; Institute of Geomechanics(DZLXJK200704) ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; 40402018) ; 40402018) ; National Natural Science Foundation of China(40772144 ; National Natural Science Foundation of China(40772144 ; Institute of Geomechanics(DZLXJK200704) ; Institute of Geomechanics(DZLXJK200704) ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; Program of Excellent Young Scientists of the Ministry of Land and Resources ; 40402018) ; 40402018)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71318]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Shuan-Hong
作者单位	1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 2.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Beijing 100037, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Shuan-Hong,Zhao, Yue,Liu, Xiao-Chun,et al. Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle[J]. LITHOS,2009,110(1-4):229-246.
APA	Zhang, Shuan-Hong.,Zhao, Yue.,Liu, Xiao-Chun.,Liu, Dun-Yi.,Chen, Fukun.,...&Chen, Hai-Hong.(2009).Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle.LITHOS,110(1-4),229-246.
MLA	Zhang, Shuan-Hong,et al."Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle".LITHOS 110.1-4(2009):229-246.