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  4. 中国科学院矿产资源研究重点实验室
Crustal Derivation of the ca. 475 Ma Eppawala Carbonatites in Sri Lanka

文献类型：期刊论文

作者Wang, Jing3,4,5; Su, Ben-Xun3,4,5; Chen, Chen3,4; Ferrero, Silvio1; Malaviarachchi, Sanjeewa P. K.6; Sakyi, Patrick Asamoah2; Yang, Yue-Heng4; Dharmapriya, P. L.6
刊名JOURNAL OF PETROLOGY
出版日期2021-11-01
卷号62期号:11页码:18
关键词Sri Lanka Eppawala marble rutile apatite crustal origin
ISSN号0022-3530
DOI10.1093/petrology/egab075
英文摘要Although a mantle origin of carbonatites has long been advocated, a few carbonatite bodies with crustal fingerprints have been identified. The Eppawala carbonatites in Sri Lanka are more similar to orogenic carbonatites than those formed in stable cratons and within plate rifts. They occur within the Pan-African orogenic belt and have a formation age of ca. 475 Ma newly obtained in this study with no contemporary mantle-related magmatism. These carbonatites have higher (Sr-87/Sr-86)(i) ratios (0.70479-0.70524) and more enriched Nd and Hf isotopic compositions than carbonatites reported in other parts of the world. Model ages (1.3-2.0 Ga) of both Nd and Hf isotopes [apatite epsilon(Nd)(t) = -9.2 to -47; rutile epsilon(Hf)(t) = -22.0 to -8.02] are in the age range of metamorphic basement in Sri Lanka, and the carbon and oxygen isotopic compositions (delta C-13(PDB) = -2.36 to -1.71 parts per thousand; delta O-18(SMOW) =13.91-15.13 parts per thousand) lie between those of mantle-derived carbonatites and marble. These crustal signatures are compatible with the chemistry of accessory minerals in the carbonatites, such as Ni-free olivine and Al- and Cr-poor rutile. Modeling results demonstrate that the Eppawala carbonatite magmas originated from a mixture of basement gneisses and marbles, probably during regional metamorphism. This interpretation is supported by the occurrence of the carbonatites along, or near, the axes of synforms and antiforms where granitic gneiss and marble are exposed. Therefore, we propose that the Eppawala carbonatites constitute another rare example of a carbonatitic magma that was derived from melting of a sedimentary carbonate protolith. Our findings suggest that other orogenic carbonatites with similar features should be re-examined to re-evaluate their origin.
WOS关键词COLLISION ZONE CARBONATITES ; HIGH-GRADE ROCKS ; HIGHLAND COMPLEX ; LIQUID IMMISCIBILITY ; ITALIAN MAGMATISM ; MANTLE SOURCE ; BAYAN OBO ; RB-SR ; ND ; ISOTOPE
资助项目National Natural Science Foundation of China[41729001] ; National Natural Science Foundation of China[91755205] ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology, Sri Lanka[MRT/TRD/AGR/3/2/20] ; Peradeniya University Research Grant[URG/18/043] ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft[FE 1527/2-2]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000745050100007
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft
源URL[http://ir.iggcas.ac.cn/handle/132A11/104022]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Su, Ben-Xun
作者单位1.Univ Potsdam, Dept Geosci, D-14476 Potsdam, Germany
2.Univ Ghana, Sch Phys & Math Sci, Dept Earth Sci, POB LG 58, Legon, Ghana
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Univ Peradeniya, Fac Sci, Dept Geol, Peradeniya 20400, Sri Lanka
推荐引用方式
GB/T 7714		 Wang, Jing,Su, Ben-Xun,Chen, Chen,et al. Crustal Derivation of the ca. 475 Ma Eppawala Carbonatites in Sri Lanka[J]. JOURNAL OF PETROLOGY,2021,62(11):18.
APA Wang, Jing.,Su, Ben-Xun.,Chen, Chen.,Ferrero, Silvio.,Malaviarachchi, Sanjeewa P. K..,...&Dharmapriya, P. L..(2021).Crustal Derivation of the ca. 475 Ma Eppawala Carbonatites in Sri Lanka.JOURNAL OF PETROLOGY,62(11),18.
MLA Wang, Jing,et al."Crustal Derivation of the ca. 475 Ma Eppawala Carbonatites in Sri Lanka".JOURNAL OF PETROLOGY 62.11(2021):18.

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