UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC
A geodynamic model of upper mantle convection related to the Pacific subduction zone is mathematically substantiated and applied to investigate the Cretaceous-Cenozoic evolution of Central East Asia (CEA) and the Arctic. We present a solution for the two-dimensional stationary problem of thermal con...
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2021-09-01
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| Series: | Геодинамика и тектонофизика |
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| Online Access: | https://www.gt-crust.ru/jour/article/view/1234 |
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| author | L. I. Lobkovsky M. M. Ramazanov V. D. Kotelkin |
| author_facet | L. I. Lobkovsky M. M. Ramazanov V. D. Kotelkin |
| author_sort | L. I. Lobkovsky |
| collection | DOAJ |
| description | A geodynamic model of upper mantle convection related to the Pacific subduction zone is mathematically substantiated and applied to investigate the Cretaceous-Cenozoic evolution of Central East Asia (CEA) and the Arctic. We present a solution for the two-dimensional stationary problem of thermal convection in the upper mantle layer, considering different Rayleigh numbers and taking into account the influence of the subduction process and lithospheric movements along the upper mantle base. We describe the results of 3D modeling of nonstationary upper mantle convection in a subduction zone. Our data give grounds to propose explanations for the entire spectrum of tectonic-magmatic processes developing within CEA in the Cenozoic and the Arctic in the Upper Cretaceous and Cenozoic. We discuss the reasons why the lithosphere in CEA and the Arctic is generally shifting towards the Pacific subduction zone, considering the presence of separate magmatic provinces and rift zones. In our opinion, this is due to the existence of a large horizontally elongated convective cell, which interior is composed of smaller isometric cells. This long cell creates the effect of conveyor dragging of the lithosphere, while its internal cells produce the effect of upper mantle plumes. |
| format | Article |
| id | doaj-art-d73053e4d8dd4e4d9be82a89a7b96dc9 |
| institution | Matheson Library |
| issn | 2078-502X |
| language | English |
| publishDate | 2021-09-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-d73053e4d8dd4e4d9be82a89a7b96dc92025-08-04T14:27:23ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2021-09-0112345547010.5800/GT-2021-12-3-0533534UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTICL. I. Lobkovsky0M. M. Ramazanov1V. D. Kotelkin2Shirshov Institute of Oceanology, Russian Academy of Sciences; Moscow Institute of Physics and TechnologyInstitute for Geothermal Research and Renewable Energy, Branch of Joint Institute for High Temperatures of the Russian Academy of SciencesShirshov Institute of Oceanology, Russian Academy of Sciences; Lomonosov Moscow State UniversityA geodynamic model of upper mantle convection related to the Pacific subduction zone is mathematically substantiated and applied to investigate the Cretaceous-Cenozoic evolution of Central East Asia (CEA) and the Arctic. We present a solution for the two-dimensional stationary problem of thermal convection in the upper mantle layer, considering different Rayleigh numbers and taking into account the influence of the subduction process and lithospheric movements along the upper mantle base. We describe the results of 3D modeling of nonstationary upper mantle convection in a subduction zone. Our data give grounds to propose explanations for the entire spectrum of tectonic-magmatic processes developing within CEA in the Cenozoic and the Arctic in the Upper Cretaceous and Cenozoic. We discuss the reasons why the lithosphere in CEA and the Arctic is generally shifting towards the Pacific subduction zone, considering the presence of separate magmatic provinces and rift zones. In our opinion, this is due to the existence of a large horizontally elongated convective cell, which interior is composed of smaller isometric cells. This long cell creates the effect of conveyor dragging of the lithosphere, while its internal cells produce the effect of upper mantle plumes.https://www.gt-crust.ru/jour/article/view/1234lithospheresubduction zoneupper mantlethermal convection2d convection model3d modelingcretaceous-cenozoic evolutioncentral east asiaarcticbaikal rift zone |
| spellingShingle | L. I. Lobkovsky M. M. Ramazanov V. D. Kotelkin UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC Геодинамика и тектонофизика lithosphere subduction zone upper mantle thermal convection 2d convection model 3d modeling cretaceous-cenozoic evolution central east asia arctic baikal rift zone |
| title | UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC |
| title_full | UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC |
| title_fullStr | UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC |
| title_full_unstemmed | UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC |
| title_short | UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC |
| title_sort | upper mantle convection related to subduction zone and application of the model to investigate the cretaceous cenozoic geodynamics of central east asia and the arctic |
| topic | lithosphere subduction zone upper mantle thermal convection 2d convection model 3d modeling cretaceous-cenozoic evolution central east asia arctic baikal rift zone |
| url | https://www.gt-crust.ru/jour/article/view/1234 |
| work_keys_str_mv | AT lilobkovsky uppermantleconvectionrelatedtosubductionzoneandapplicationofthemodeltoinvestigatethecretaceouscenozoicgeodynamicsofcentraleastasiaandthearctic AT mmramazanov uppermantleconvectionrelatedtosubductionzoneandapplicationofthemodeltoinvestigatethecretaceouscenozoicgeodynamicsofcentraleastasiaandthearctic AT vdkotelkin uppermantleconvectionrelatedtosubductionzoneandapplicationofthemodeltoinvestigatethecretaceouscenozoicgeodynamicsofcentraleastasiaandthearctic |