Boltish Impact Structure and its impact-melting rocks
The Boltysh crater in the central part of the Ukrainian Shield is a complex impact structure composed by a deep inner crater with a central uplift and a peripheral depression. The powerful annular sheet of impact melt rocks fills the inner crater around the central uplift. Two main types of impact m...
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| Дата: | 2011 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | rus |
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Subbotin Institute of Geophysics of the NAS of Ukraine
2011
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/116856 |
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| Назва журналу: | Geofizicheskiy Zhurnal |
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journalsuranua-geofizicheskiy-article-1168562020-10-07T11:02:34Z Boltish Impact Structure and its impact-melting rocks Gurov, E. P. Shekhunova, S. B. Permyakov, V. V. The Boltysh crater in the central part of the Ukrainian Shield is a complex impact structure composed by a deep inner crater with a central uplift and a peripheral depression. The powerful annular sheet of impact melt rocks fills the inner crater around the central uplift. Two main types of impact melt rocks are presented in the sheet: the microporphyric rocks with glassy matrix and rocks with crystalline matrix without any glass. While the glassy matrix melt rocks are the product of solidification of a dry melt, the crystalline matrix melt rocks were formed in the marginal zones of the sheet by interaction with water and water-bearing substances. The age of the Boltysh structure is 65,17 ± 0,64 Ma that is an evidence of its formation at the Cretaceous-Tertiary boundary simultaneously with the Chixhulub crater in Mexico, which caused a mass life extinction at the end of the Mesozoic. Subbotin Institute of Geophysics of the NAS of Ukraine 2011-10-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116856 10.24028/gzh.0203-3100.v33i5.2011.116856 Geofizicheskiy Zhurnal; Vol. 33 No. 5 (2011); 66-89 Геофизический журнал; Том 33 № 5 (2011); 66-89 Геофізичний журнал; Том 33 № 5 (2011); 66-89 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/116856/110925 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Gurov, E. P. Shekhunova, S. B. Permyakov, V. V. |
| spellingShingle |
Gurov, E. P. Shekhunova, S. B. Permyakov, V. V. Boltish Impact Structure and its impact-melting rocks |
| author_facet |
Gurov, E. P. Shekhunova, S. B. Permyakov, V. V. |
| author_sort |
Gurov, E. P. |
| title |
Boltish Impact Structure and its impact-melting rocks |
| title_short |
Boltish Impact Structure and its impact-melting rocks |
| title_full |
Boltish Impact Structure and its impact-melting rocks |
| title_fullStr |
Boltish Impact Structure and its impact-melting rocks |
| title_full_unstemmed |
Boltish Impact Structure and its impact-melting rocks |
| title_sort |
boltish impact structure and its impact-melting rocks |
| description |
The Boltysh crater in the central part of the Ukrainian Shield is a complex impact structure composed by a deep inner crater with a central uplift and a peripheral depression. The powerful annular sheet of impact melt rocks fills the inner crater around the central uplift. Two main types of impact melt rocks are presented in the sheet: the microporphyric rocks with glassy matrix and rocks with crystalline matrix without any glass. While the glassy matrix melt rocks are the product of solidification of a dry melt, the crystalline matrix melt rocks were formed in the marginal zones of the sheet by interaction with water and water-bearing substances. The age of the Boltysh structure is 65,17 ± 0,64 Ma that is an evidence of its formation at the Cretaceous-Tertiary boundary simultaneously with the Chixhulub crater in Mexico, which caused a mass life extinction at the end of the Mesozoic. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2011 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116856 |
| work_keys_str_mv |
AT gurovep boltishimpactstructureanditsimpactmeltingrocks AT shekhunovasb boltishimpactstructureanditsimpactmeltingrocks AT permyakovvv boltishimpactstructureanditsimpactmeltingrocks |
| first_indexed |
2024-04-21T19:41:27Z |
| last_indexed |
2024-04-21T19:41:27Z |
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