Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys
According to detrital zircons ages spectra and Hf isotopes in the matrix of the ophiolitic mélange, the Ailaoshan–Song Ma–Song Chay Indosinian suture zone can be divided into four units, namely M1, M2, M3, and M4. Different deposition ages (310–270 Ma, 260–255 Ma, ${\sim }$245 Ma, and ${>}$255 Ma...
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Académie des sciences
2024-04-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.248/ |
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| author | Lin, Wei Liu, Fei Wang, Yin Meng, Lingtong Faure, Michel Chu, Yang Nguyen, Vuong Van Wu, Qinying Wei, Wei Thu, Hoai Luong Thi Vu, Tich Van |
| author_facet | Lin, Wei Liu, Fei Wang, Yin Meng, Lingtong Faure, Michel Chu, Yang Nguyen, Vuong Van Wu, Qinying Wei, Wei Thu, Hoai Luong Thi Vu, Tich Van |
| author_sort | Lin, Wei |
| collection | DOAJ |
| description | According to detrital zircons ages spectra and Hf isotopes in the matrix of the ophiolitic mélange, the Ailaoshan–Song Ma–Song Chay Indosinian suture zone can be divided into four units, namely M1, M2, M3, and M4. Different deposition ages (310–270 Ma, 260–255 Ma, ${\sim }$245 Ma, and ${>}$255 Ma) demonstrate temporal heterogeneity. The M1 unit is in the middle and south segments, and inner part of the NW segment of the Ailaoshan ophiolitic mélange, and the southernmost part of Song Ma ophiolitic mélange. The Silurian and Devonian sedimentary rocks of the Indochina block are the major provenance of the M1 unit. The M2 unit is located in the southwest part of the NW segment of the Ailaoshan ophiolitic mélange. At least half of the 270–250 Ma detrital zircons might come from the South China block. The M3 unit is mainly located in the Ailaoshan–Song Ma ophiolitic mélange and sourced from Indochina block. M4 is mainly located in the Song Chay ophiolitic mélange, and its detrital zircons are mainly sourced from the South China block. The strike-parallel heterogeneity refers to the different distributions along the orogenic belt with various provenances. The strike-perpendicular heterogeneity characterises the geometry of M1, M2, and M3 units and is attributed to a Cenozoic positive-flower structure of the Red River Fault showing sinistral strike-slip tectonic event with SW-ward thrusting. These temporal and spatial heterogeneities correspond well to the different evolutionary stages of the eastern Paleo-Tethys. |
| format | Article |
| id | doaj-art-24139e317bb64b94af0ba1ca9a08715b |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Académie des sciences |
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| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-24139e317bb64b94af0ba1ca9a08715b2025-02-07T10:41:48ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252024-04-01356S211513610.5802/crgeos.24810.5802/crgeos.248Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-TethysLin, Wei0https://orcid.org/0000-0001-8966-5399Liu, Fei1Wang, Yin2Meng, Lingtong3Faure, Michel4https://orcid.org/0000-0003-1880-8115Chu, Yang5https://orcid.org/0000-0003-3253-9599Nguyen, Vuong Van6Wu, Qinying7Wei, Wei8Thu, Hoai Luong Thi9Vu, Tich Van10College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, China; Wuhan Center of China Geological Survey (Central South China Innovation Center for Geosciences), Wuhan 430205, ChinaCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Geosteering & Logging Research Institute, Sinopec Matrix Corporation, Qingdao 266071, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaInstitut des Sciences de la Terre d’Orléans, UMR CNRS 7327, Université d’Orléans, 45067 Orléans Cedex 2, FranceCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaUniversity of Science, Vietnam National University, Hanoi, Viet NamCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Innovation Academy of Earth Science, Chinese Academy of Sciences, Beijing 100029, ChinaUniversity of Science, Vietnam National University, Hanoi, Viet NamUniversity of Science, Vietnam National University, Hanoi, Viet NamAccording to detrital zircons ages spectra and Hf isotopes in the matrix of the ophiolitic mélange, the Ailaoshan–Song Ma–Song Chay Indosinian suture zone can be divided into four units, namely M1, M2, M3, and M4. Different deposition ages (310–270 Ma, 260–255 Ma, ${\sim }$245 Ma, and ${>}$255 Ma) demonstrate temporal heterogeneity. The M1 unit is in the middle and south segments, and inner part of the NW segment of the Ailaoshan ophiolitic mélange, and the southernmost part of Song Ma ophiolitic mélange. The Silurian and Devonian sedimentary rocks of the Indochina block are the major provenance of the M1 unit. The M2 unit is located in the southwest part of the NW segment of the Ailaoshan ophiolitic mélange. At least half of the 270–250 Ma detrital zircons might come from the South China block. The M3 unit is mainly located in the Ailaoshan–Song Ma ophiolitic mélange and sourced from Indochina block. M4 is mainly located in the Song Chay ophiolitic mélange, and its detrital zircons are mainly sourced from the South China block. The strike-parallel heterogeneity refers to the different distributions along the orogenic belt with various provenances. The strike-perpendicular heterogeneity characterises the geometry of M1, M2, and M3 units and is attributed to a Cenozoic positive-flower structure of the Red River Fault showing sinistral strike-slip tectonic event with SW-ward thrusting. These temporal and spatial heterogeneities correspond well to the different evolutionary stages of the eastern Paleo-Tethys.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.248/Eastern Paleo-TethysAilaoshan–Song Ma–Song Chay ophiolitic mélange zoneZircon U–Pb datingLu–Hf isotopic analysisPaleogeography reconstruction |
| spellingShingle | Lin, Wei Liu, Fei Wang, Yin Meng, Lingtong Faure, Michel Chu, Yang Nguyen, Vuong Van Wu, Qinying Wei, Wei Thu, Hoai Luong Thi Vu, Tich Van Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys Comptes Rendus. Géoscience Eastern Paleo-Tethys Ailaoshan–Song Ma–Song Chay ophiolitic mélange zone Zircon U–Pb dating Lu–Hf isotopic analysis Paleogeography reconstruction |
| title | Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys |
| title_full | Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys |
| title_fullStr | Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys |
| title_full_unstemmed | Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys |
| title_short | Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys |
| title_sort | temporal and spatial heterogeneity of the ailaoshan song ma song chay ophiolitic melange and its significance on the evolution of paleo tethys |
| topic | Eastern Paleo-Tethys Ailaoshan–Song Ma–Song Chay ophiolitic mélange zone Zircon U–Pb dating Lu–Hf isotopic analysis Paleogeography reconstruction |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.248/ |
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