IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Ca. 815 Ma intra-plate granitoids and mafic dykes from Emeishan pluton in the western Yangtze Block, SW China: A record of rifting during the breakup of Rodinia
Zou, Hao1,2; Li, Yang1; Huang, Chang-Cheng1; Said, Nuru3,4; Jiang, Xiu-Wei1; Liu, Hang1; Li, Min1; Chen, Hai-Feng1; Liu, Chun-Mei1; Lan, Zhong-Wu2
2022-04-01
Source PublicationPRECAMBRIAN RESEARCH
ISSN0301-9268
Volume371Pages:21
AbstractThe western Yangtze Block, South China is characterized by voluminous Neoproterozoic extension-related volcano-sedimentary sequences and intrusions (e.g. Emeishan granitoid intrusion) and spatially associated mafic dykes. The origin and tectonic setting of Emeishan granitoid intrusion and mafic dykes in the Yangtze Block is poorly study. Understanding the origin and geodynamic setting of dykes and granitoid intrusion are significant in deciphering thermal structure and composition of mantle, tectonic evolution as well as crustal growth processes in the Yangtze Block. SIMS Zircon U-Pb dating of Emeishan granitoid intrusion and mafic dykes suggests that the granitoids (ca. 818 Ma) and mafic dykes (ca. 814 Ma) are contemporaneous. Compositionally, the Emeishan granitoids are restricted and characterized by high SiO2 (69.11-70.50 wt%), Na2O + K2O (3.52-4.13%) and Al2O3 (14.16-14.47%), but low CaO (1.78-2.03%), MgO (0.72-0.91%) contents. They feature strong LREEenrichment (La/YbN = 7.2-12.3) in conjunction with negative Eu anomalies. The mafic dykes have low SiO2 (48.09-48.65 wt%), K2O (1.94-2.12 wt%) and Na2O (1.64-1.75 wt%) contents, and high Mg# (61.67-62.26). On primitive mantle-normalized trace element plot, they are characterized by enrichment of LILEs and depletion of HFSEs. Both the mafic dykes and granitoids record similar zircon epsilon Hf(t) values (+2.2 to +12.1, +1.4 to +6.8), and zircon delta O-18 values (4.47 parts per thousand and 10.41 parts per thousand, 4.49 parts per thousand and 12.05 parts per thousand, respectively). The rifting-related geochemical signature of the Emeishan pluton and contemporaneous margin and intra-plate plume-related magmatism suggest that they were derived from mantle melting in extensional tectonic setting during mid-Neoproterozoic.
KeywordRodinia supercontinent Emeishan complex Break-up U-Pb zircon age Hf-O isotopes
DOI10.1016/j.precamres.2022.106569
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution
WOS KeywordZIRCON U-PB ; BIMODAL VOLCANIC-ROCKS ; A-TYPE GRANITES ; EASTERN TIBETAN PLATEAU ; OXYGEN-ISOTOPE EVIDENCE ; LARGE IGNEOUS PROVINCE ; SOUTH CHINA ; TRACE-ELEMENT ; MANTLE PLUME ; NEOPROTEROZOIC GRANITOIDS
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2019M650833] ; Open Fund Project of State Key Laboratory of Lithospheric Evolution[KDL-K201902] ; Open Fund Project of State Key Laboratory of Lithospheric Evolution[201608515058]
Funding OrganizationChina Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution ; Open Fund Project of State Key Laboratory of Lithospheric Evolution
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000796581800001
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105939
Collection岩石圈演化国家重点实验室
Corresponding AuthorZou, Hao
Affiliation1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610059, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.King Abdulaziz Univ, Dept Mineral & Rocks, Jeddah 20206, Saudi Arabia
4.Univ Western Australia, Ctr Explorat Targeting, 35 Stirling Highway, Crawley, WA 6009, Australia
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Zou, Hao,Li, Yang,Huang, Chang-Cheng,et al. Ca. 815 Ma intra-plate granitoids and mafic dykes from Emeishan pluton in the western Yangtze Block, SW China: A record of rifting during the breakup of Rodinia[J]. PRECAMBRIAN RESEARCH,2022,371:21.
APA Zou, Hao.,Li, Yang.,Huang, Chang-Cheng.,Said, Nuru.,Jiang, Xiu-Wei.,...&Lan, Zhong-Wu.(2022).Ca. 815 Ma intra-plate granitoids and mafic dykes from Emeishan pluton in the western Yangtze Block, SW China: A record of rifting during the breakup of Rodinia.PRECAMBRIAN RESEARCH,371,21.
MLA Zou, Hao,et al."Ca. 815 Ma intra-plate granitoids and mafic dykes from Emeishan pluton in the western Yangtze Block, SW China: A record of rifting during the breakup of Rodinia".PRECAMBRIAN RESEARCH 371(2022):21.
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