Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions

doi:10.1130/B30021.1

	Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions
	Li, Zheng-Xiang 1; Li, Xian-Hua 2; Wartho, Jo-Anne 1; Clark, Chris 1; Li, Wu-Xian 3; Zhang, Chuan-Lin 4; Bao, Chaomin 4
刊名	GEOLOGICAL SOCIETY OF AMERICA BULLETIN
	2010-05-01
卷号	122 期号:5-6 页码:772-793
ISSN号	0016-7606
DOI	10.1130/B30021.1
文献子类	Article
英文摘要	The early Paleozoic Wuyi-Yunkai orogen in South China is a major orogenic belt in East Asia that formed at a similar time as the classic Caledonian orogeny in Europe. Despite the possibility of its being one of the few examples of intraplate orogenesis in the world, details about the orogen remain poorly defined. In this study, we provide age constraints on metamorphic and magmatic events in the eastern segment of the orogen, and the protoliths of the amphibolite-facies metamorphic rocks found there. By combining previous work with our new metamorphic and petrogenetic analyses, we present the following findings: (1) the Wuyi-Yunkai orogeny occurred between mid-Ordovician (>460 Ma) and earliest Devonian (ca. 415 Ma) time; (2) amphibolite-facies metamorphism in the eastern Wuyi-Yunkai orogen occurred between ca. 460 and 445 Ma, whereas cooling below 500-300 degrees C occurred by ca. 420 Ma; (3) the orogen exhibits a clockwise pressure-temperature (P-T) path and a maximum pressure of >8 kbar, indicating crustal thickening during the orogeny; (4) protoliths of the high-grade metamorphic rocks in the eastern segment of the orogen were dominantly Neoproterozoic (840-720 Ma) volcanic and volcaniclastic rift successions and younger deposits formed in a failed rift, and Paleoproterozoic rocks account for only a small proportion of the outcrops; and (5) the analyzed granites indicate a mixed source of Paleoproterozoic basement and Neoproterozoic continental rift rocks, with elevated melt temperatures of >800 degrees C, which are interpreted as reflecting dehydration melting of basin sediments taken to below midcrustal levels.
WOS关键词	U-PB ZIRCON ; FLAT-SLAB SUBDUCTION ; S-TYPE GRANITES ; CATHAYSIA BLOCK ; CENTRAL AUSTRALIA ; TECTONIC SIGNIFICANCE ; MANTLE PLUME ; I-TYPE ; GEOCHRONOLOGY ; EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000278350800010
资助机构	Australian Research Council (ARC)(DP0770228 ; Australian Research Council (ARC)(DP0770228 ; National Natural Science Foundation of China (NSFC)(40728002) ; National Natural Science Foundation of China (NSFC)(40728002) ; Chinese Academy of Sciences/SAFEA ; Chinese Academy of Sciences/SAFEA ; DP0450020) ; DP0450020) ; Australian Research Council (ARC)(DP0770228 ; Australian Research Council (ARC)(DP0770228 ; National Natural Science Foundation of China (NSFC)(40728002) ; National Natural Science Foundation of China (NSFC)(40728002) ; Chinese Academy of Sciences/SAFEA ; Chinese Academy of Sciences/SAFEA ; DP0450020) ; DP0450020) ; Australian Research Council (ARC)(DP0770228 ; Australian Research Council (ARC)(DP0770228 ; National Natural Science Foundation of China (NSFC)(40728002) ; National Natural Science Foundation of China (NSFC)(40728002) ; Chinese Academy of Sciences/SAFEA ; Chinese Academy of Sciences/SAFEA ; DP0450020) ; DP0450020) ; Australian Research Council (ARC)(DP0770228 ; Australian Research Council (ARC)(DP0770228 ; National Natural Science Foundation of China (NSFC)(40728002) ; National Natural Science Foundation of China (NSFC)(40728002) ; Chinese Academy of Sciences/SAFEA ; Chinese Academy of Sciences/SAFEA ; DP0450020) ; DP0450020)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73442]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, Zheng-Xiang
作者单位	1.Curtin Univ Technol, Dept Appl Geol, Inst Geosci Res, Perth, WA 6845, Australia 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100027, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China 4.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Peoples R China
推荐引用方式 GB/T 7714	Li, Zheng-Xiang,Li, Xian-Hua,Wartho, Jo-Anne,et al. Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2010,122(5-6):772-793.
APA	Li, Zheng-Xiang.,Li, Xian-Hua.,Wartho, Jo-Anne.,Clark, Chris.,Li, Wu-Xian.,...&Bao, Chaomin.(2010).Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,122(5-6),772-793.
MLA	Li, Zheng-Xiang,et al."Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 122.5-6(2010):772-793.