Decoding multiple tectonothermal events in zircons from single rock;samples: SHRIMP zircon U-Pb data from the late Neoarchean rocks of;Daqingshan, North China Craton

	Decoding multiple tectonothermal events in zircons from single rock;samples: SHRIMP zircon U-Pb data from the late Neoarchean rocks of;Daqingshan, North China Craton
	Ma, Mingzhu 6; Wan, Yusheng ; Santosh, M.; Xu, Zhongyuan ; Xie, Hangqiang ; Dong, Chunyan ; Liu, Dunyi ; Guo, Chunli
刊名	GONDWANA RESEARCH
	2012
卷号	22 期号:3-4 页码:810-827
关键词	Multiple tectonothermal events SHRIMP zircon geochronology Early Precambrian Daqingshan North China Craton
ISSN号	017ET
英文摘要	A complex sequence of tectonothermal events shaped the Neoarchean-Paleoproterozoic crustal evolution in the North China Craton (NCC). Here we present a systematic SHRIMP zircon U-Pb investigation on a suite of metamorphic rocks from the Hademengou area of Daqingshan within the Khondalite Belt of the Inner Mongolia Suture Zone. We analyzed zircons from two meta-volcanic rocks of the Sanggan "Group" and four meta-igneous rocks of late Neoarchean to early Paleoproterozoic. Zircons from these rocks display typical core-rim or core-mantle-rim structures. The relict magmatic zircons record crystallization ages of ca. 2.5 Ga followed by variable Pb loss, showing a range of ages in the concordia up to 2.1 Ga. The recrystallized domains of zircons show sector zoning or are composed of inner dark domains, and outer lighter domains. The overgrowth mantles are homogeneous. The recrystallized zircons and overgrowth mantles show similar age data distribution along a concordia from similar to 2.5 to similar to 2.1 Ga. The overgrowth rims are poorly developed but record ages (1.96-1.84 Ga) similar to those displayed by metamorphic zircons in the late Paleoproterozoic "Upper Wulashan Subgroup" as well as the charnockites and UHT granulites reported in previous studies from this region. A meta-syenogranite intruding the Sanggan "Group" and Hypersthene dioritic gneiss contains 1.95 Ga magmatic and 1.85 Ga metamorphic zircons. Magmatic zircons of the late Neoarchean-early Paleoproterozoic metavolcanic rocks have epsilon(Hf)(t) of 12 to 7.0, t(DM1) (Hf) model ages of 2687 to 2532 Ma and t(DM2(CC))(Hf) model ages of 2837 to 2559 Ma. The recrystallized zircons and mantle domains display Hf isotope composition similar to that of the magmatic domains. Our study is the first report from this region that identifies multiple tectonothermal events ranging from late Neoarchean through early to late Paleoproterozoic from zircons within single rock samples in the NCC. A strong overprint of late Paleoproterozoic metamorphism traced commonly in all the rock units indicates that these rocks were involved in the tectonothermal event associated with the final amalgamation of the NCC. (C) 2012 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
学科主题	构造地质学
WOS关键词	ULTRAHIGH-TEMPERATURE METAMORPHISM ; DAQINSHAN AREA ; HF ; GEOCHRONOLOGY ; STANDARD ; SUPERCONTINENT ; EVOLUTION ; ZONE
WOS研究方向	Geosciences, Multidisciplinary
语种	英语
出版者	We thank Chun Yang and Weilin Gan for making the zircon mounts, Ning Li;for taking zircon CL images, Yuhai Zhang and Zhiqing Yang for help with;SHRIMP zircon dating and KeJun Hou for help with Hf isotope analysis.;Zircon standards were provided by Drs. Lance Black and Lutz Nasdala. We;are grateful to Zhensheng Yang, Zhenghong Liu, Simon A Wilde and Alfred;Kroner for their assistance during the research. The study was supported;financially by the Key Program of the Land and Resource Ministry of;China (1212011120151, 1212010811033), the National Natural Science;Foundation of China (41002062) and the Scientific Research Program of;the Ministry of Science and Technology of China (J0901).
WOS记录号	WOS:000309573600004
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39765]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing SHRIMP Ctr, Beijing 100037, Peoples R China. 2.Kochi Univ, Fac Sci, Dept Nat Environm Sci, Kochi 7808520, Japan. 3.China Univ Geosci, Journal Ctr, Beijing 100083, Peoples R China. 4.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China. 5.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China. 6.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Ma, Mingzhu,Wan, Yusheng,Santosh, M.,et al. Decoding multiple tectonothermal events in zircons from single rock;samples: SHRIMP zircon U-Pb data from the late Neoarchean rocks of;Daqingshan, North China Craton[J]. GONDWANA RESEARCH,2012,22(3-4):810-827.
APA	Ma, Mingzhu.,Wan, Yusheng.,Santosh, M..,Xu, Zhongyuan.,Xie, Hangqiang.,...&Guo, Chunli.(2012).Decoding multiple tectonothermal events in zircons from single rock;samples: SHRIMP zircon U-Pb data from the late Neoarchean rocks of;Daqingshan, North China Craton.GONDWANA RESEARCH,22(3-4),810-827.
MLA	Ma, Mingzhu,et al."Decoding multiple tectonothermal events in zircons from single rock;samples: SHRIMP zircon U-Pb data from the late Neoarchean rocks of;Daqingshan, North China Craton".GONDWANA RESEARCH 22.3-4(2012):810-827.