Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism
On the basis of the mechanism of instability of the shear zone between moving lithospheric plates, a new version of the model for the formation of marginal seas of the Pacific Ocean in the form of successive occurrence of wave stresses and vortex structures has been proposed. The lithospheric plates...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | Russian |
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Institute of Volcanology and Seismology FEB RAS
2020-06-01
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| Series: | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
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| Online Access: | http://www.kscnet.ru/journal/kraesc/article/view/620 |
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| author | Изосов Л.А. Чупрынин В.И. Петрищевский А.М. Емельянова Т.А. Мельниченко Ю.И. Васильева М.А. Ли Н.С. |
| author_facet | Изосов Л.А. Чупрынин В.И. Петрищевский А.М. Емельянова Т.А. Мельниченко Ю.И. Васильева М.А. Ли Н.С. |
| author_sort | Изосов Л.А. |
| collection | DOAJ |
| description | On the basis of the mechanism of instability of the shear zone between moving lithospheric plates, a new version of the model for the formation of marginal seas of the Pacific Ocean in the form of successive occurrence of wave stresses and vortex structures has been proposed. The lithospheric plates in their lateral interaction zone possess to a great extent the properties of a viscous medium, where two tectonic masses with high but different viscosity and different densities weakly intermixing horizontally are moving at different velocities. Therefore, the interface begins to bend, resulting in vortex structures in the tectonosphere of marginal seas and adjacent continental areas. At sharp and rapid deformations, the Earth’s crust behaves like a solid body, and at long time deformations — like a viscous medium. This mechanism of formation of the seas reflects the initial stage of the collision of the Pacific plate with Eurasia, when the converging plates are just beginning to contact. Duplex zones are formed in the Earth’s crust and the upper mantle of marginal seas, where the crust-mantle substance is undergoing vortex circulation. |
| first_indexed | 2024-12-19T12:08:38Z |
| format | Article |
| id | doaj.art-6baf4f409da541f49bc67d17f0c190d7 |
| institution | Directory Open Access Journal |
| issn | 1816-5524 1816-5532 |
| language | Russian |
| last_indexed | 2024-12-19T12:08:38Z |
| publishDate | 2020-06-01 |
| publisher | Institute of Volcanology and Seismology FEB RAS |
| record_format | Article |
| series | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
| spelling | doaj.art-6baf4f409da541f49bc67d17f0c190d72022-12-21T20:22:17ZrusInstitute of Volcanology and Seismology FEB RASВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле1816-55241816-55322020-06-014628510110.31431/1816-5524-2020-2-46-85-101623Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirismИзосов Л.А.0Чупрынин В.И.1Петрищевский А.М.2Емельянова Т.А.3Мельниченко Ю.И.4Васильева М.А.5Ли Н.С.6V.I. Il’ichev Pacific Oceanological Institute FEB RAS, Vladivostook, RussiaPacific Institute of Geography, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, RussiaInstitute of Complex Analysis of Regional Problems, Far East Branch, Russian Academy of Sciences, Birobidzhan, RussiaV.I. Il’ichev Pacific Oceanological Institute FEB RAS, Vladivostook, RussiaV.I. Il’ichev Pacific Oceanological Institute FEB RAS, Vladivostook, RussiaInstitute of Complex Analysis of Regional Problems, Far East Branch, Russian Academy of Sciences, Birobidzhan, RussiaV.I. Il’ichev Pacific Oceanological Institute FEB RAS, Vladivostook, RussiaOn the basis of the mechanism of instability of the shear zone between moving lithospheric plates, a new version of the model for the formation of marginal seas of the Pacific Ocean in the form of successive occurrence of wave stresses and vortex structures has been proposed. The lithospheric plates in their lateral interaction zone possess to a great extent the properties of a viscous medium, where two tectonic masses with high but different viscosity and different densities weakly intermixing horizontally are moving at different velocities. Therefore, the interface begins to bend, resulting in vortex structures in the tectonosphere of marginal seas and adjacent continental areas. At sharp and rapid deformations, the Earth’s crust behaves like a solid body, and at long time deformations — like a viscous medium. This mechanism of formation of the seas reflects the initial stage of the collision of the Pacific plate with Eurasia, when the converging plates are just beginning to contact. Duplex zones are formed in the Earth’s crust and the upper mantle of marginal seas, where the crust-mantle substance is undergoing vortex circulation.http://www.kscnet.ru/journal/kraesc/article/view/620shear instabilitymarginal seaslithospheric platesasthenospheric diapers |
| spellingShingle | Изосов Л.А. Чупрынин В.И. Петрищевский А.М. Емельянова Т.А. Мельниченко Ю.И. Васильева М.А. Ли Н.С. Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле shear instability marginal seas lithospheric plates asthenospheric diapers |
| title | Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism |
| title_full | Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism |
| title_fullStr | Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism |
| title_full_unstemmed | Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism |
| title_short | Formation of marginal seas of the Pacific ocean: A consequence of shear instability and asthenospheric diapirism |
| title_sort | formation of marginal seas of the pacific ocean a consequence of shear instability and asthenospheric diapirism |
| topic | shear instability marginal seas lithospheric plates asthenospheric diapers |
| url | http://www.kscnet.ru/journal/kraesc/article/view/620 |
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