IGGCAS OpenIR  > 矿产资源研究院重点实验室
Crustal Derivation of the ca. 475 Ma Eppawala Carbonatites in Sri Lanka
Wang, Jing1,2,3; Su, Ben-Xun1,2,3; Chen, Chen1,2; Ferrero, Silvio4; Malaviarachchi, Sanjeewa P. K.5; Sakyi, Patrick Asamoah6; Yang, Yue-Heng2; Dharmapriya, P. L.5
2021-11-02
Source PublicationJOURNAL OF PETROLOGY
ISSN0022-3530
Volume62Issue:11Pages:18
AbstractAlthough 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 center dot 70479-0 center dot 70524) and more enriched Nd and Hf isotopic compositions than carbonatites reported in other parts of the world. Model ages (1 center dot 3-2 center dot 0 Ga) of both Nd and Hf isotopes [apatite e(Nd)(t) = -9 center dot 2 to -4 center dot 7; rutile epsilon(Hf)(t) = -22 center dot 0 to -8 center dot 02] are in the age range of metamorphic basement in Sri Lanka, and the carbon and oxygen isotopic compositions (delta C-13(PDB) = -2 center dot 36 to -1 center dot 71; delta O-18(SMOW) = 13 center dot 91-15 center dot 13) 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.
KeywordSri Lanka Eppawala marble rutile apatite crustal origin
DOI10.1093/petrology/egab075
Funding OrganizationNational 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft
WOS KeywordCOLLISION ZONE CARBONATITES ; HIGH-GRADE ROCKS ; HIGHLAND COMPLEX ; MANTLE SOURCE ; LIQUID IMMISCIBILITY ; ITALIAN MAGMATISM ; BAYAN OBO ; RB-SR ; ND ; ORIGIN
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; 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 ; Ministry of Science and Technology, Sri Lanka ; Ministry of Science and Technology, Sri Lanka ; Peradeniya University Research Grant ; Peradeniya University Research Grant ; German Federal Ministry for Education and Research ; German Federal Ministry for Education and Research ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000791218600017
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/104022
Collection矿产资源研究院重点实验室
Corresponding AuthorSu, Ben-Xun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Potsdam, Dept Geosci, D-14476 Potsdam, Germany
5.Univ Peradeniya, Fac Sci, Dept Geol, Peradeniya 20400, Sri Lanka
6.Univ Ghana, Sch Phys & Math Sci, Dept Earth Sci, POB LG 58, Legon, Ghana
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
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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