Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China
The West Junggar orogen, located in the southwestern Central Asian Orogenic Belt (CAOB), preserves an abundant record of tectonic processes associated with the evolution of the Junggar Ocean. In this study, we use detrital zircon U–Pb age data from Ordovician to Carboniferous sandstones in the south...
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Elsevier
2021-03-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987120301808 |
| _version_ | 1797707290163281920 |
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| author | Pan Zhang Guocan Wang Tianyi Shen Ali Polat Chengyu Zhu |
| author_facet | Pan Zhang Guocan Wang Tianyi Shen Ali Polat Chengyu Zhu |
| author_sort | Pan Zhang |
| collection | DOAJ |
| description | The West Junggar orogen, located in the southwestern Central Asian Orogenic Belt (CAOB), preserves an abundant record of tectonic processes associated with the evolution of the Junggar Ocean. In this study, we use detrital zircon U–Pb age data from Ordovician to Carboniferous sandstones in the southern and central West Junggar domains, complemented by literature data, to better constrain the tectonic evolution of the southwestern CAOB. The Kekeshayi, Qiargaye, and Laba formations in the southern West Junggar domain were deposited during the Darriwilian-Sandbian, Katian-Aeronian, and Homerian-Emsian, respectively. Detrital zircon provenances of these formations display a marked shift from the southern West Junggar domain to the Paleo-Kazakhstan Continent (PKC). This suggests that the southern West Junggar intra-oceanic arc might have gradually accreted to the northern margin of the PKC prior to the Emsian, which has significantly contributed to the lateral growth of the PKC. The Carboniferous strata, Xibeikulasi, Baogutu, and Tailegula formations, in the central West Junggar domain represent a coherent sequence of volcaniclastic turbidites and were deposited in a progressively shrinking remnant oceanic basin during the Visean to Moscovian. They contain unimodal detrital zircon distributions and are derived from the local and coeval magmatic rocks in the central West Junggar domain. We propose that the final closure of the Junggar Ocean likely occurred in the end of the Late Carboniferous in response to regional amalgamation events in the southwestern CAOB, which marks the final assembly of the Kazakhstan Orocline. The central and southern West Junggar domains underwent individual evolution in the Paleozoic, and were recombined by the significant intra-continental reworking along the large-scale strike-slip faults. |
| first_indexed | 2024-03-12T06:04:15Z |
| format | Article |
| id | doaj.art-e520e4de8d1f4cfd801f6df009767b94 |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T06:04:15Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-e520e4de8d1f4cfd801f6df009767b942023-09-03T03:51:24ZengElsevierGeoscience Frontiers1674-98712021-03-01122531548Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern ChinaPan Zhang0Guocan Wang1Tianyi Shen2Ali Polat3Chengyu Zhu4Center for Global Tectonics, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaCenter for Global Tectonics, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China; Institute of Geological Survey, China University of Geosciences, Wuhan 430074, China; Corresponding author. Center for Global Tectonics, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China.Center for Global Tectonics, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaSchool of the Environmental Sciences, University of Windsor, Windsor, ON N9B 3P4, Canada; State Key Laboratory of Geological Processes and Mineral Resources (GPMR), China University of Geosciences, Wuhan 430074, ChinaCenter for Global Tectonics, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaThe West Junggar orogen, located in the southwestern Central Asian Orogenic Belt (CAOB), preserves an abundant record of tectonic processes associated with the evolution of the Junggar Ocean. In this study, we use detrital zircon U–Pb age data from Ordovician to Carboniferous sandstones in the southern and central West Junggar domains, complemented by literature data, to better constrain the tectonic evolution of the southwestern CAOB. The Kekeshayi, Qiargaye, and Laba formations in the southern West Junggar domain were deposited during the Darriwilian-Sandbian, Katian-Aeronian, and Homerian-Emsian, respectively. Detrital zircon provenances of these formations display a marked shift from the southern West Junggar domain to the Paleo-Kazakhstan Continent (PKC). This suggests that the southern West Junggar intra-oceanic arc might have gradually accreted to the northern margin of the PKC prior to the Emsian, which has significantly contributed to the lateral growth of the PKC. The Carboniferous strata, Xibeikulasi, Baogutu, and Tailegula formations, in the central West Junggar domain represent a coherent sequence of volcaniclastic turbidites and were deposited in a progressively shrinking remnant oceanic basin during the Visean to Moscovian. They contain unimodal detrital zircon distributions and are derived from the local and coeval magmatic rocks in the central West Junggar domain. We propose that the final closure of the Junggar Ocean likely occurred in the end of the Late Carboniferous in response to regional amalgamation events in the southwestern CAOB, which marks the final assembly of the Kazakhstan Orocline. The central and southern West Junggar domains underwent individual evolution in the Paleozoic, and were recombined by the significant intra-continental reworking along the large-scale strike-slip faults.http://www.sciencedirect.com/science/article/pii/S1674987120301808CAOBWest JunggarDetrital zirconSedimentary provenancesPaleozoic evolution |
| spellingShingle | Pan Zhang Guocan Wang Tianyi Shen Ali Polat Chengyu Zhu Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China Geoscience Frontiers CAOB West Junggar Detrital zircon Sedimentary provenances Paleozoic evolution |
| title | Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China |
| title_full | Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China |
| title_fullStr | Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China |
| title_full_unstemmed | Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China |
| title_short | Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China |
| title_sort | paleozoic convergence processes in the southwestern central asian orogenic belt insights from u pb dating of detrital zircons from west junggar northwestern china |
| topic | CAOB West Junggar Detrital zircon Sedimentary provenances Paleozoic evolution |
| url | http://www.sciencedirect.com/science/article/pii/S1674987120301808 |
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