Application of density modeling to address the nature of the Bransfield Strait
In order to study deep structure of north-western borderland of the Antarctic Peninsula, taking into account two existing contradictory notions as to the reasons of appearance of rifto-genesis in the Bransfield Strait, according to seismic data, multi-variant two-dimensional density simulation has b...
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| Дата: | 2011 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | rus |
| Опубліковано: |
Subbotin Institute of Geophysics of the NAS of Ukraine
2011
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/116904 |
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| Назва журналу: | Geofizicheskiy Zhurnal |
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journalsuranua-geofizicheskiy-article-1169042020-10-07T11:02:11Z Application of density modeling to address the nature of the Bransfield Strait Kozlenko, Yu.V. Kozlenko, M. V. In order to study deep structure of north-western borderland of the Antarctic Peninsula, taking into account two existing contradictory notions as to the reasons of appearance of rifto-genesis in the Bransfield Strait, according to seismic data, multi-variant two-dimensional density simulation has been conducted along the profile involving the structures from the oceanic block of the Drake Strait up to the continent. The results did not confirm the spreading-subduction nature of the West Antarctica. Therefore, the continental margin of the Antarctic Peninsula belongs the most probably to the passive type, and the Bransfield Strait is not a back from arch basin. It has been shown that typically oceanic crust of the Drake Strait is interchanged by two-layered sub-continental crust of the South Shetland islands. In the Bransfield Strait the rootage of the mantle matter into lower and medium part of the basement has been confirmed that together with subsidence of the bottom is typical for rift structures. Suggestion has been made as to existence of one more rifting center in the coastal part of the Bransfield platform. The depth of the mantle surface within the Antarctic Peninsula obtained according to calculations, testifies its continental structure. Subbotin Institute of Geophysics of the NAS of Ukraine 2011-08-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116904 10.24028/gzh.0203-3100.v33i4.2011.116904 Geofizicheskiy Zhurnal; Vol. 33 No. 4 (2011); 142-152 Геофизический журнал; Том 33 № 4 (2011); 142-152 Геофізичний журнал; Том 33 № 4 (2011); 142-152 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/116904/110960 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Kozlenko, Yu.V. Kozlenko, M. V. |
| spellingShingle |
Kozlenko, Yu.V. Kozlenko, M. V. Application of density modeling to address the nature of the Bransfield Strait |
| author_facet |
Kozlenko, Yu.V. Kozlenko, M. V. |
| author_sort |
Kozlenko, Yu.V. |
| title |
Application of density modeling to address the nature of the Bransfield Strait |
| title_short |
Application of density modeling to address the nature of the Bransfield Strait |
| title_full |
Application of density modeling to address the nature of the Bransfield Strait |
| title_fullStr |
Application of density modeling to address the nature of the Bransfield Strait |
| title_full_unstemmed |
Application of density modeling to address the nature of the Bransfield Strait |
| title_sort |
application of density modeling to address the nature of the bransfield strait |
| description |
In order to study deep structure of north-western borderland of the Antarctic Peninsula, taking into account two existing contradictory notions as to the reasons of appearance of rifto-genesis in the Bransfield Strait, according to seismic data, multi-variant two-dimensional density simulation has been conducted along the profile involving the structures from the oceanic block of the Drake Strait up to the continent. The results did not confirm the spreading-subduction nature of the West Antarctica. Therefore, the continental margin of the Antarctic Peninsula belongs the most probably to the passive type, and the Bransfield Strait is not a back from arch basin. It has been shown that typically oceanic crust of the Drake Strait is interchanged by two-layered sub-continental crust of the South Shetland islands. In the Bransfield Strait the rootage of the mantle matter into lower and medium part of the basement has been confirmed that together with subsidence of the bottom is typical for rift structures. Suggestion has been made as to existence of one more rifting center in the coastal part of the Bransfield platform. The depth of the mantle surface within the Antarctic Peninsula obtained according to calculations, testifies its continental structure. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2011 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116904 |
| work_keys_str_mv |
AT kozlenkoyuv applicationofdensitymodelingtoaddressthenatureofthebransfieldstrait AT kozlenkomv applicationofdensitymodelingtoaddressthenatureofthebransfieldstrait |
| first_indexed |
2024-04-21T19:41:32Z |
| last_indexed |
2024-04-21T19:41:32Z |
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