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Ca. 1318 Ma A-type granite on the northern margin of the North China Craton: Implications for intraplate extension of the Columbia supercontinent

文献类型：期刊论文

作者Shi, Yuruo1; Liu, Dunyi1; Kroener, Alfred1,2; Jian, Ping1; Miao, Laicheng3; Zhang, Fuqin3
刊名LITHOS
出版日期2012-09-01
卷号148页码:1-9
关键词Mesoproterozoic A-type granite North China Craton Intraplate extension Columbia supercontinent
ISSN号0024-4937
DOI10.1016/j.lithos.2012.05.023
文献子类Article
英文摘要Identification of the Mesoproterozoic A-type Jining granite and granite porphyry, which with abundant coeval mafic dike sills and volcanic rocks on the northern margin of the Precambrian North China Craton (NCC), may suggest intraplate extension of Columbia supercontinent. Major and trace elements of the Jining granite show an affinity to A-type granites, and may reflect an intraplate rift setting (A(1)-type granite). High Rb, Y, Yb, and Ta contents also show features of within-plate granites. SHRIMP zircon dating yielded concordant weighted mean Pb-207/Pb-206 ages of 1318 +/- 7 Ma and 1321 +/- 15 Ma, which define a Mesoproterozoic magmatic event. The zircons have negative epsilon(Hf(1))of -3.6 to -8.6 and corresponding old T-DM2 of 2330-2609 Ma (mean 2436 Ma), suggesting the involvement of a crustal source in the magma genesis. The Hf-in-zircon isotopic compositions are aligned along an evolution line for the average continental crust. These results suggest that the granite and granite porphyry originated from partial melting of an Archean crustal source in a within-plate anorogenic setting during the Mesoproterozoic. The discovery of this A-type granite and granite porphyry with coeval mafic sills suggests that the NCC was involved in the fragmentation of the Columbia supercontinent, and the intraplate extension of the supercontinent occurred during Mesoproterozoic, probably at ca. 1318 Ma. 2012 Elsevier B.V. All rights reserved.
WOS关键词U-PB AGES ; HF ISOTOPE COMPOSITION ; MAFIC DYKE SWARMS ; ANORTHOSITE COMPLEX ; TRACE-ELEMENT ; LU-HF ; PALEOPROTEROZOIC SUPERCONTINENT ; MESOPROTEROZOIC SUPERCONTINENT ; GEOLOGICAL SIGNIFICANCE ; RODINIA SUPERCONTINENT
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000308055800001
出版者ELSEVIER SCIENCE BV
源URL[http://ir.iggcas.ac.cn/handle/132A11/84318]  
专题中国科学院地质与地球物理研究所
通讯作者Shi, Yuruo
作者单位1.Chinese Acad Geol Sci, Inst Geol, Beijing SHRIMP Ctr, Beijing 100037, Peoples R China
2.Johannes Gutenberg Univ Mainz, Inst Geowissensch, D-55099 Mainz, Germany
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Yuruo,Liu, Dunyi,Kroener, Alfred,et al. Ca. 1318 Ma A-type granite on the northern margin of the North China Craton: Implications for intraplate extension of the Columbia supercontinent[J]. LITHOS,2012,148:1-9.
APA Shi, Yuruo,Liu, Dunyi,Kroener, Alfred,Jian, Ping,Miao, Laicheng,&Zhang, Fuqin.(2012).Ca. 1318 Ma A-type granite on the northern margin of the North China Craton: Implications for intraplate extension of the Columbia supercontinent.LITHOS,148,1-9.
MLA Shi, Yuruo,et al."Ca. 1318 Ma A-type granite on the northern margin of the North China Craton: Implications for intraplate extension of the Columbia supercontinent".LITHOS 148(2012):1-9.

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来源：地质与地球物理研究所

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