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Geochemistry and tectonic implications of late Mesoproterozoic alkaline bimodal volcanic rocks from the Tieshajie Group in the southeastern Yangtze Block, South China

文献类型：期刊论文

作者Li, Longming1,2; Lin, Shoufa1,3; Xing, Guangfu4; Davis, Donald W.5; Davis, William J.6; Xiao, Wenjiao2; Yin, Changqing1,2
刊名PRECAMBRIAN RESEARCH
出版日期2013-06-01
卷号230页码:179-192
关键词Late Mesoproterozoic Alkaline Bimodal Volcanism Tieshajie Group Continental Rifting Rodinia Assembly
ISSN号0301-9268
DOI10.1016/j.precamres.2013.02.004
文献子类Article
英文摘要A SHRIMP U-Pb zircon age along with geochemical and Nd-Hf isotopic results are reported for the Tieshajie volcanic rocks in the southeastern Yangtze Block, South China. The Tieshajie volcanic rocks are bimodal in composition and are dominantly transitional alkaline basalts and alkaline rhyolites, with an eruption age of 1159 +/- 8 Ma. The basaltic samples have high TiO2 (2.14-3.12%) and relatively low Mg# (36-49) with variable epsilon(Nd(t)) values (-2.2 to +1.2), and display OIB-like incompatible elemental patterns, similar to many alkali basalts in continental rifts. These geochemical characteristics indicate that the primary magma of these basalts was probably derived from a moderately depleted asthenospheric mantle source and underwent fractional crystallization plus minor crustal contamination. The rhyolitic rocks are highly enriched in Th, Ta, Nb, REE, Zr, Hf and Y and depleted in Sr, P, Eu and Ti, showing affinity to A(1)-type granites. Combined with their slightly positive epsilon(Nd(t)) values (+1.3 to +1.6) and negative epsilon(Hf(t)) values (-2.45 to -12.7), the Tieshajie rhyolites were most likely generated by partial melting of mafic lower crust induced by basaltic underplating following asthenospheric ascent.
WOS关键词ZIRCON U-PB ; EASTERN NEW-MEXICO ; GA CONTINENTAL-CRUST ; A-TYPE GRANITOIDS ; TRACE-ELEMENT ; MANTLE PLUME ; SM-ND ; ISOTOPE EVIDENCE ; JIANGNAN OROGEN ; FRACTIONAL CRYSTALLIZATION
WOS研究方向Geology
语种英语
WOS记录号WOS:000318379100011
出版者ELSEVIER SCIENCE BV
资助机构Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Chinese Ministry of Land and Resources ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada
源URL[http://ir.iggcas.ac.cn/handle/132A11/86456]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Longming
作者单位1.Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON N2L 3G1, Canada
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Hefei Univ Technol, Sch Resources & Environm, Hefei 230026, Peoples R China
4.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Peoples R China
5.Univ Toronto, Dept Earth Sci, Toronto, ON M5S 3B1, Canada
6.Geol Survey Canada, Ottawa, ON K1A 0E8, Canada
推荐引用方式
GB/T 7714		 Li, Longming,Lin, Shoufa,Xing, Guangfu,et al. Geochemistry and tectonic implications of late Mesoproterozoic alkaline bimodal volcanic rocks from the Tieshajie Group in the southeastern Yangtze Block, South China[J]. PRECAMBRIAN RESEARCH,2013,230:179-192.
APA Li, Longming.,Lin, Shoufa.,Xing, Guangfu.,Davis, Donald W..,Davis, William J..,...&Yin, Changqing.(2013).Geochemistry and tectonic implications of late Mesoproterozoic alkaline bimodal volcanic rocks from the Tieshajie Group in the southeastern Yangtze Block, South China.PRECAMBRIAN RESEARCH,230,179-192.
MLA Li, Longming,et al."Geochemistry and tectonic implications of late Mesoproterozoic alkaline bimodal volcanic rocks from the Tieshajie Group in the southeastern Yangtze Block, South China".PRECAMBRIAN RESEARCH 230(2013):179-192.

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来源：地质与地球物理研究所

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