Late Early-Cretaceous Magma Mixing in the Langqi Island, Fujian Province, China: Evidences from Petrology, Geochemistry and Zircon Geochronology

Liangliang Huang; Liyuan Wang; Hong-Rui Fan; Musen Lin; Wenhui Zhang

doi:10.1007/s12583-019-1022-6

Volume 31 Issue 3

Jul 2020

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Journal of Earth Science > 2020 > 31(3): 468-480.

Liangliang Huang, Liyuan Wang, Hong-Rui Fan, Musen Lin, Wenhui Zhang. Late Early-Cretaceous Magma Mixing in the Langqi Island, Fujian Province, China: Evidences from Petrology, Geochemistry and Zircon Geochronology. Journal of Earth Science, 2020, 31(3): 468-480. doi: 10.1007/s12583-019-1022-6

Citation:

Liangliang Huang, Liyuan Wang, Hong-Rui Fan, Musen Lin, Wenhui Zhang. Late Early-Cretaceous Magma Mixing in the Langqi Island, Fujian Province, China: Evidences from Petrology, Geochemistry and Zircon Geochronology. Journal of Earth Science, 2020, 31(3): 468-480. doi: 10.1007/s12583-019-1022-6

Citation:

Liangliang Huang, Liyuan Wang, Hong-Rui Fan, Musen Lin, Wenhui Zhang. Late Early-Cretaceous Magma Mixing in the Langqi Island, Fujian Province, China: Evidences from Petrology, Geochemistry and Zircon Geochronology. Journal of Earth Science, 2020, 31(3): 468-480. doi: 10.1007/s12583-019-1022-6

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Late Early-Cretaceous Magma Mixing in the Langqi Island, Fujian Province, China: Evidences from Petrology, Geochemistry and Zircon Geochronology

doi: 10.1007/s12583-019-1022-6

1.
Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2.
College of Zijin Mining, Fuzhou University, Fuzhou 350116, China

More Information

Corresponding author: Liyuan Wang, ORCID:0000-0001-5171-6584.E-mail:wangliyuan030101@163.com
Received Date: 27 Jan 2019
Accepted Date: 22 May 2019
Publish Date: 01 Jun 2020

Abstract

Abstract

The mafic enclaves from Mesozoic intermediate-acid magmatic rocks, widely developed along Fujian coast, are considered to be the results of large-scale crust-mantle interaction and magma mixing. In this paper, petrography, mineralogy, and geochemistry of granites and mafic microgranular enclaves (MMEs) in Langqi Island are studied to provide new information for tracing crust-mantle interaction. The zircon U-Pb dating results show that the Langqi rocks were formed at ~101 Ma, which are metaluminous, enriched in silica and high-K calc-alkaline I-type granites. The enclaves have a typical magmatic structure, which is characterized by magma mixing between high-temperature basic magma and low-temperature acidic magma through injecting. The enclaves and host granites show a tendency to mixed major and trace elements, displaying a clear-cut contact relationship, which is indicative of coeval magmatism. The genesis of Langqi rocks is related to the extensional setting caused by the subduction of Paleo-Pacific Plate, and they are the results of mixing of subduction-related metasomatized mantle-derived mafic and induced crustal-melted granitic magma originating from partial melting of the crustal material.
- magma mixing,
- granite,
- mafic microgranular enclaves,
- Langqi,
- Fujian

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References(38)

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