First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka)
In the Nikolaevka-1 quarry (53°05’17.45»N, 158°21’26.28»E), sequence of ash horizons buried in lake sediments formed about 100 thousand years ago were found. Analysis of the composition of volcanic glasses from these tephra allows us to identify for the first time three Late Pleistocene tephras of A...
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| Format: | Article |
| Language: | Russian |
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Institute of Volcanology and Seismology FEB RAS
2024-12-01
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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/832 |
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| author | O.V. Dirksen L.I. Bazanova V.V. Ponomareva M.V. Portnyagin T.M. Filosofova V.G. Dirksen |
| author_facet | O.V. Dirksen L.I. Bazanova V.V. Ponomareva M.V. Portnyagin T.M. Filosofova V.G. Dirksen |
| author_sort | O.V. Dirksen |
| collection | DOAJ |
| description | In the Nikolaevka-1 quarry (53°05’17.45»N, 158°21’26.28»E), sequence of ash horizons buried in lake sediments formed about 100 thousand years ago were found. Analysis of the composition of volcanic glasses from these tephra allows us to identify for the first time three Late Pleistocene tephras of Avachinsky volcano (21/23, 21/4 and 21/10). In addition, tephra DS7 from one of the centers of the Karymsky volcanic cluster, with an age of about 107 thousand years, was discovered. The stratigraphic position of the Avachainsky volcano tephras, relative this tephra DS7, allows us to state that tephra 21/10 formed slightly less than 100 thousand years ago, while the other two (21/23 and 21/4) are older than 100 thousand years. Estimates of the minimum volumes of material, ejected during these eruptions, make them comparable to most historical eruptive events at this volcano, and the eruption 21/4 — to the most powerful eruption during 20th century, the 1945 eruption. |
| format | Article |
| id | doaj-art-aea06a14bf1c46ad85c9cdc8ac97daeb |
| institution | Kabale University |
| issn | 1816-5524 1816-5532 |
| language | Russian |
| publishDate | 2024-12-01 |
| 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-aea06a14bf1c46ad85c9cdc8ac97daeb2024-12-29T06:01:30ZrusInstitute of Volcanology and Seismology FEB RASВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле1816-55241816-55322024-12-01644808510.31431/1816-5524-2024-4-64-80-851114First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka)O.V. Dirksen0L.I. Bazanova1V.V. Ponomareva2M.V. Portnyagin3T.M. Filosofova4V.G. Dirksen5Institute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, RussiaInstitute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, RussiaInstitute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, RussiaGEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, GermanyInstitute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, RussiaInstitute of Volcanology and Seismology FEB RAS, Petropavlovsk-Kamchatsky, RussiaIn the Nikolaevka-1 quarry (53°05’17.45»N, 158°21’26.28»E), sequence of ash horizons buried in lake sediments formed about 100 thousand years ago were found. Analysis of the composition of volcanic glasses from these tephra allows us to identify for the first time three Late Pleistocene tephras of Avachinsky volcano (21/23, 21/4 and 21/10). In addition, tephra DS7 from one of the centers of the Karymsky volcanic cluster, with an age of about 107 thousand years, was discovered. The stratigraphic position of the Avachainsky volcano tephras, relative this tephra DS7, allows us to state that tephra 21/10 formed slightly less than 100 thousand years ago, while the other two (21/23 and 21/4) are older than 100 thousand years. Estimates of the minimum volumes of material, ejected during these eruptions, make them comparable to most historical eruptive events at this volcano, and the eruption 21/4 — to the most powerful eruption during 20th century, the 1945 eruption.http://www.kscnet.ru/journal/kraesc/article/view/832avachinsky volcanotephralate pleistocene |
| spellingShingle | O.V. Dirksen L.I. Bazanova V.V. Ponomareva M.V. Portnyagin T.M. Filosofova V.G. Dirksen First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле avachinsky volcano tephra late pleistocene |
| title | First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) |
| title_full | First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) |
| title_fullStr | First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) |
| title_full_unstemmed | First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) |
| title_short | First findings of late pleistocene tephras of Avachinsky volcano (Southern Kamchatka) |
| title_sort | first findings of late pleistocene tephras of avachinsky volcano southern kamchatka |
| topic | avachinsky volcano tephra late pleistocene |
| url | http://www.kscnet.ru/journal/kraesc/article/view/832 |
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