Leucogranite Records Multiple Collisional Orogenies
Abstract The geological evolution of orogens is the sum of events related to both their cycle of generation as well as features inherited from their basement units. The Himalayan Orogen provides a well‐constrained Cenozoic history of active plate convergence and orogenic processes overprinting an ea...
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| Format: | Article |
| Language: | English |
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Wiley
2022-08-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2021GL096817 |
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| author | Li Liu Di‐Cheng Zhu Qing Wang Peter A. Cawood Daniel F. Stockli Lisa D. Stockli Chao Lin Jin‐Jiang Zhang Liang‐Liang Zhang Zhi‐Dan Zhao |
| author_facet | Li Liu Di‐Cheng Zhu Qing Wang Peter A. Cawood Daniel F. Stockli Lisa D. Stockli Chao Lin Jin‐Jiang Zhang Liang‐Liang Zhang Zhi‐Dan Zhao |
| author_sort | Li Liu |
| collection | DOAJ |
| description | Abstract The geological evolution of orogens is the sum of events related to both their cycle of generation as well as features inherited from their basement units. The Himalayan Orogen provides a well‐constrained Cenozoic history of active plate convergence and orogenic processes overprinting an early Paleozoic orogen. A total of 1,627 Himalayan leucogranite zircons were depth‐profiled showing high resolution (0.6 μm) internal age structures. Zircon rim ages record a detailed and complex history of melting and deformation, postdating the North Indo‐Australie Orogen (ca. 490–460 Ma) documented by the zircon core age data. An interesting finding is the inconsistency of age groups between detrital zircons in the Himalaya and inherited cores of leucogranite zircons, re‐evaluating the argument that leucogranites are purely derived from melting of metasedimentary rocks. Variations in the thickness of zircon rims corresponds with changing Cenozoic orogenic stages with rims thicker than 4 μm indicating the extensional regime. |
| format | Article |
| id | doaj-art-87888c8ded3c4501a082f4beb33e9ea3 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-87888c8ded3c4501a082f4beb33e9ea32025-08-20T02:11:38ZengWileyGeophysical Research Letters0094-82761944-80072022-08-014915n/an/a10.1029/2021GL096817Leucogranite Records Multiple Collisional OrogeniesLi Liu0Di‐Cheng Zhu1Qing Wang2Peter A. Cawood3Daniel F. Stockli4Lisa D. Stockli5Chao Lin6Jin‐Jiang Zhang7Liang‐Liang Zhang8Zhi‐Dan Zhao9State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing ChinaState Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing ChinaState Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing ChinaSchool of Earth, Atmosphere & Environment Monash University Melbourne VIC AustraliaDepartment of Geological Sciences Jackson School of Geosciences University of Texas at Austin Austin TX USADepartment of Geological Sciences Jackson School of Geosciences University of Texas at Austin Austin TX USAKey Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space Sciences Ministry of Education Peking University Beijing ChinaKey Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space Sciences Ministry of Education Peking University Beijing ChinaState Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing ChinaState Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing ChinaAbstract The geological evolution of orogens is the sum of events related to both their cycle of generation as well as features inherited from their basement units. The Himalayan Orogen provides a well‐constrained Cenozoic history of active plate convergence and orogenic processes overprinting an early Paleozoic orogen. A total of 1,627 Himalayan leucogranite zircons were depth‐profiled showing high resolution (0.6 μm) internal age structures. Zircon rim ages record a detailed and complex history of melting and deformation, postdating the North Indo‐Australie Orogen (ca. 490–460 Ma) documented by the zircon core age data. An interesting finding is the inconsistency of age groups between detrital zircons in the Himalaya and inherited cores of leucogranite zircons, re‐evaluating the argument that leucogranites are purely derived from melting of metasedimentary rocks. Variations in the thickness of zircon rims corresponds with changing Cenozoic orogenic stages with rims thicker than 4 μm indicating the extensional regime.https://doi.org/10.1029/2021GL096817leucograniteHimalayan Orogencrustal evolutionplate convergencedepth profiling |
| spellingShingle | Li Liu Di‐Cheng Zhu Qing Wang Peter A. Cawood Daniel F. Stockli Lisa D. Stockli Chao Lin Jin‐Jiang Zhang Liang‐Liang Zhang Zhi‐Dan Zhao Leucogranite Records Multiple Collisional Orogenies Geophysical Research Letters leucogranite Himalayan Orogen crustal evolution plate convergence depth profiling |
| title | Leucogranite Records Multiple Collisional Orogenies |
| title_full | Leucogranite Records Multiple Collisional Orogenies |
| title_fullStr | Leucogranite Records Multiple Collisional Orogenies |
| title_full_unstemmed | Leucogranite Records Multiple Collisional Orogenies |
| title_short | Leucogranite Records Multiple Collisional Orogenies |
| title_sort | leucogranite records multiple collisional orogenies |
| topic | leucogranite Himalayan Orogen crustal evolution plate convergence depth profiling |
| url | https://doi.org/10.1029/2021GL096817 |
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