Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton
Abstract The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by global ca. 1.8–1.6 Ga large igneous...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-11-01
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| Series: | Geochemistry, Geophysics, Geosystems |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2022GC010662 |
| _version_ | 1827771631214264320 |
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| author | Chen Wu Guosheng Wang Zhiguang Zhou Peter J. Haproff Andrew V. Zuza Wenyou Liu |
| author_facet | Chen Wu Guosheng Wang Zhiguang Zhou Peter J. Haproff Andrew V. Zuza Wenyou Liu |
| author_sort | Chen Wu |
| collection | DOAJ |
| description | Abstract The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by global ca. 1.8–1.6 Ga large igneous provinces. The North China craton is notable for containing Paleoproterozoic orogens along its margins, herein named the Northern Margin orogen, yet the nature and timing of orogenic and extensional processes of these orogens and their role in the supercontinent cycle remain unclear. In this contribution, we present new field observations, U‐Pb zircon and baddeleyite geochronology dates, and major/trace‐element and isotope geochemical analyses from the northern margin of the North China craton that detail its Paleoproterozoic tectonic and magmatic history. Specifically, we record the occurrence of ca. 2.2–2.0 Ga magmatic arc rocks, ca. 1.9–1.88 Ga tectonic mélange and mylonitic shear zones, and folded lower Paleoproterozoic strata. These rocks were affected by ca. 1.9–1.8 Ga granulite‐facies metamorphism and ca. 1.87–1.78 Ga post‐collisional, extension‐related magmatism along the cratonal northern margin. We interpret that the generation and emplacement of these rocks, and the coupled metamorphic and magmatic processes, were related to oceanic subduction and subsequent continent‐continent collision during the Paleoproterozoic. The occurrence of ca. 1.77–1.73 Ga mafic dykes and ca. 1.75 Ga mylonitic shear zones along the northern margin of the North China craton may have been related to a regional mantle plume event. Our results are consistent with modern style plate tectonics, including oceanic subduction‐related plate convergence and continent‐continent collision, operating in the Paleoproterozoic. |
| first_indexed | 2024-03-11T12:57:01Z |
| format | Article |
| id | doaj.art-de6deff516224dcf8bd5bba14957cfc9 |
| institution | Directory Open Access Journal |
| issn | 1525-2027 |
| language | English |
| last_indexed | 2024-03-11T12:57:01Z |
| publishDate | 2022-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geochemistry, Geophysics, Geosystems |
| spelling | doaj.art-de6deff516224dcf8bd5bba14957cfc92023-11-03T17:00:48ZengWileyGeochemistry, Geophysics, Geosystems1525-20272022-11-012311n/an/a10.1029/2022GC010662Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China CratonChen Wu0Guosheng Wang1Zhiguang Zhou2Peter J. Haproff3Andrew V. Zuza4Wenyou Liu5State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing ChinaSchool of Earth Sciences and Resources China University of Geosciences Beijing ChinaSchool of Earth Sciences and Resources China University of Geosciences Beijing ChinaDepartment of Earth and Ocean Sciences University of North Carolina Wilmington Wilmington NC USANevada Bureau of Mines and Geology University of Nevada Reno NV USASchool of Earth Sciences and Resources China University of Geosciences Beijing ChinaAbstract The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by global ca. 1.8–1.6 Ga large igneous provinces. The North China craton is notable for containing Paleoproterozoic orogens along its margins, herein named the Northern Margin orogen, yet the nature and timing of orogenic and extensional processes of these orogens and their role in the supercontinent cycle remain unclear. In this contribution, we present new field observations, U‐Pb zircon and baddeleyite geochronology dates, and major/trace‐element and isotope geochemical analyses from the northern margin of the North China craton that detail its Paleoproterozoic tectonic and magmatic history. Specifically, we record the occurrence of ca. 2.2–2.0 Ga magmatic arc rocks, ca. 1.9–1.88 Ga tectonic mélange and mylonitic shear zones, and folded lower Paleoproterozoic strata. These rocks were affected by ca. 1.9–1.8 Ga granulite‐facies metamorphism and ca. 1.87–1.78 Ga post‐collisional, extension‐related magmatism along the cratonal northern margin. We interpret that the generation and emplacement of these rocks, and the coupled metamorphic and magmatic processes, were related to oceanic subduction and subsequent continent‐continent collision during the Paleoproterozoic. The occurrence of ca. 1.77–1.73 Ga mafic dykes and ca. 1.75 Ga mylonitic shear zones along the northern margin of the North China craton may have been related to a regional mantle plume event. Our results are consistent with modern style plate tectonics, including oceanic subduction‐related plate convergence and continent‐continent collision, operating in the Paleoproterozoic.https://doi.org/10.1029/2022GC010662North China cratonPaleoproterozoic orogentectonic evolutionpost‐orogenic extensionductile shear zonegranulite |
| spellingShingle | Chen Wu Guosheng Wang Zhiguang Zhou Peter J. Haproff Andrew V. Zuza Wenyou Liu Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton Geochemistry, Geophysics, Geosystems North China craton Paleoproterozoic orogen tectonic evolution post‐orogenic extension ductile shear zone granulite |
| title | Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton |
| title_full | Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton |
| title_fullStr | Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton |
| title_full_unstemmed | Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton |
| title_short | Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton |
| title_sort | paleoproterozoic plate tectonics recorded in the northern margin orogen north china craton |
| topic | North China craton Paleoproterozoic orogen tectonic evolution post‐orogenic extension ductile shear zone granulite |
| url | https://doi.org/10.1029/2022GC010662 |
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