The age, isotopic signature and significance of the youngest Mesozoic granitoids in the Jiaodong Terrane, Shandong Province, North China Craton

doi:10.1016/j.lithos.2010.08.019

	The age, isotopic signature and significance of the youngest Mesozoic granitoids in the Jiaodong Terrane, Shandong Province, North China Craton
	Goss, Sarah C.1; Wilde, Simon A.1; Wu, Fuyuan 2; Yang, Jinhui 2
刊名	LITHOS
	2010-12-01
卷号	120 期号:3-4 页码:309-326
关键词	North China Craton Latest Yanshanian (Early Cretaceous) granitoids SHRIMP zircon U-Pb dating Delamination Lithospheric thinning Pacific plate subduction
ISSN号	0024-4937
DOI	10.1016/j.lithos.2010.08.019
文献子类	Article
英文摘要	Most Cretaceous granitoids in the Jiaodong Terrane of Shandong Province North China Craton were intruded between similar to 130 and 122 Ma. However four granitoid batholiths are significantly younger with an average zircon U-Pb SHRIMP emplacement age of 116 2 Ma, these are the Sanfoshan Batholith -118 +/- 1 Ma the Aishan Batholith -116 +/- 1 Ma, the Yashan Pluton -113 +/- 2 Ma and the Laoshan Batholith -115 +/- 2 Ma These granitoids post-date proposed delamination that occurred prior to similar to 125 Ma in the eastern NCC and their geochemistry thus provides information about the nature of the continental crust at this time The rocks are mostly monzogranites and syenogranites of I-type affinity with local alkali feldspar granite of A-type affinity In addition a monzogranite sample from the Aishan Batholith records an age of 125 +/- 3 Ma, indicating a direct association with the slightly older granitoids in the area Indeed they all contain inherited zircons with ages of similar to 125-120 Ma indicating interaction with these earlier granitoids Most samples are metaluminous enriched in light rare earth elements and depleted in high-field strength elements Paleo- to Neoarchean T-DM2 model ages (ranging from 3900 Ma to 2491 Ma) and negative epsilon(Hf(t)) values Imply the involvement of Archean basement and older recycled continental crustal material in the magma source region They were likely derived from partial melting of the lower or middle crust due to mafic magma underplating followed by various degrees of interaction between mantle-derived mafic magma and felsic crustal magma accompanied by fractional crystallization We propose that lithospheric thinning and extension in the Early Cretaceous due to roll-back of the Pacific Plate beneath the eastern North China Craton led to asthenospheric upwelling and basaltic magmatism This underplating in turn led to crustal melting and evolution of the granitic intrusions described here (C) 2010 Elsevier B V All rights reserved
WOS关键词	SINO-KOREAN CRATON ; CRUST-MANTLE INTERACTION ; U-PB GEOCHRONOLOGY ; A-TYPE GRANITES ; SUBCONTINENTAL LITHOSPHERIC MANTLE ; METAMORPHIC CORE COMPLEX ; SULU OROGENIC BELT ; LODE GOLD DEPOSIT ; EASTERN CHINA ; TECTONIC EVOLUTION
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000285706600005
资助机构	International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS) ; International Postgraduate Research Scholarship (IPRS)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/72224]
专题	中国科学院地质与地球物理研究所
通讯作者	Goss, Sarah C.
作者单位	1.Curtin Univ Technol, Dept Appl Geol, Perth, WA 6845, Australia 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Goss, Sarah C.,Wilde, Simon A.,Wu, Fuyuan,et al. The age, isotopic signature and significance of the youngest Mesozoic granitoids in the Jiaodong Terrane, Shandong Province, North China Craton[J]. LITHOS,2010,120(3-4):309-326.
APA	Goss, Sarah C.,Wilde, Simon A.,Wu, Fuyuan,&Yang, Jinhui.(2010).The age, isotopic signature and significance of the youngest Mesozoic granitoids in the Jiaodong Terrane, Shandong Province, North China Craton.LITHOS,120(3-4),309-326.
MLA	Goss, Sarah C.,et al."The age, isotopic signature and significance of the youngest Mesozoic granitoids in the Jiaodong Terrane, Shandong Province, North China Craton".LITHOS 120.3-4(2010):309-326.