The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt

doi:10.1016/j.tecto.2009.08.009

	The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt
	Zhou, Jian-Bo 1,2; Wilde, Simon A.1,2; Zhang, Xing-Zhou 2; Zhao, Guo-Chun 3; Zheng, Chang-Qing 2; Wang, Yue-Jun 4; Zhang, Xiao-Hui 5
刊名	TECTONOPHYSICS
	2009-12-01
卷号	478 期号:3-4 页码:230-246
关键词	SHRIMP U-Pb zircon dating Heilongjiang Complex Epidote-blueschist facies HP metamorphism Pacific Accretion Central Asian Orogenic Belt
ISSN号	0040-1951
DOI	10.1016/j.tecto.2009.08.009
文献子类	Review
英文摘要	The Heilongjiang Complex is a sequence of high-pressure metamorphic rocks, located along the suture zone that separates the Jiamusi-Khanka (-Bureya) and Songliao-Zhangguangcai blocks in NE China (and extending northward into Far East Russia). The complex consists of mafic-ultramafic rocks, various quartzo-feldspathic schists and radiolarian-bearing quartzite (formerly chert). The rocks were metamorphosed up to epidote-blueschist facies, with P-T conditions of approximately T = 320-450 degrees C and P = 0.9-1.1 GPa. The lithological association and major and trace element compositions indicate that the blueschists were metabasalts of OIB and E-MORB affinity, most likely generated in a rift setting at the western margin of the Jiamusi Block that later underwent subduction. Magmatic zircons extracted from two samples of epidote-blueschist facies metabasalts from Mudanjiang have SHRIMP U-Pb (206)Pb/(238)U ages of 213 +/- 2 Ma and 224 +/- 7 Ma, whereas similar rocks similar to 200 km farther north at Yilan have ages of 258 +/- 2 Ma and 259 +/- 4 Ma. These data define the protolith ages of the metabasalts as Late Triassic and Late Permian, respectively. These ages limit the timing of high-pressure metamorphism in the Heilongjiang Complex to post-Late Triassic, consistent with argon data reported from previous studies. Inherited zircon components in all four epidote-blueschist facies samples show distinct populations at 290-330 Ma, 420-530 Ma, 670-910 Ma and > 1065 Ma. Such ages are also a feature of the Central Asia Orogenic Belt (CAOB) to the west, supporting the view that the Jiamusi Block was most likely the rifted easternmost segment of the CAOB and not an exotic block derived from Gondwana. Final closure between the Jiamusi-Khanka-Bureya and Songliao blocks took place in the latest Triassic to Early Jurassic, with the two blocks accreted as a result of Pacific Ocean subduction. This suggests that the Heilongjiang Complex records the time when northward movement of the combined Mongolia-North China Block toward Siberia was waning and becoming surpassed by the onset of Pacific accretion from the east, which has dominated the tectonics of NE China and Far East Russia since the Early Jurassic. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词	CONSISTENT THERMODYNAMIC DATA ; A-TYPE GRANITES ; TECTONIC EVOLUTION ; NORTHEASTERN CHINA ; CENTRAL-ASIA ; JIAMUSI MASSIF ; VOLCANIC-ROCKS ; GEOCHEMICAL DISCRIMINATION ; PALEOZOIC ACCRETIONARY ; EASTERN HEILONGJIANG
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000272733800007
资助机构	Natural Science Foundation of China(40672148 ; Natural Science Foundation of China(40672148 ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; 40739905 ; 40739905 ; 40872121) ; 40872121) ; Natural Science Foundation of China(40672148 ; Natural Science Foundation of China(40672148 ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; 40739905 ; 40739905 ; 40872121) ; 40872121) ; Natural Science Foundation of China(40672148 ; Natural Science Foundation of China(40672148 ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; 40739905 ; 40739905 ; 40872121) ; 40872121) ; Natural Science Foundation of China(40672148 ; Natural Science Foundation of China(40672148 ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; Ministry of Science and Technology of the P.R. China(2009CB825008) ; 40739905 ; 40739905 ; 40872121) ; 40872121)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70462]
专题	中国科学院地质与地球物理研究所
通讯作者	Wilde, Simon A.
作者单位	1.Curtin Univ Technol, Dept Appl Geol, Perth, WA 6845, Australia 2.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Jian-Bo,Wilde, Simon A.,Zhang, Xing-Zhou,et al. The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt[J]. TECTONOPHYSICS,2009,478(3-4):230-246.
APA	Zhou, Jian-Bo.,Wilde, Simon A..,Zhang, Xing-Zhou.,Zhao, Guo-Chun.,Zheng, Chang-Qing.,...&Zhang, Xiao-Hui.(2009).The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt.TECTONOPHYSICS,478(3-4),230-246.
MLA	Zhou, Jian-Bo,et al."The onset of Pacific margin accretion in NE China: Evidence from the Heilongjiang high-pressure metamorphic belt".TECTONOPHYSICS 478.3-4(2009):230-246.