Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka)
The results of comprehensive petrological, geochemical, and mineralogical studies of effusive volcanic rocks from the diamond-bearing Tolbachik fissure eruption of 2012-2013 (TTI-50) are summarized. It is concluded that the eruption was two-phase, which began with a short-term eruption of trachybasa...
Published in: | Вестник Пермского университета. Геология |
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Perm Sate National Research University
2022
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Online Access: | https://doi.org/10.17072/psu.geol.21.3.193 https://doaj.org/article/261caafddb37429f99599d5c84e3ec64 |
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ftdoajarticles:oai:doaj.org/article:261caafddb37429f99599d5c84e3ec64 2023-05-15T16:59:22+02:00 Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) V. I. Silaev L. P. Anikin G. A. Karpov D. N. Remizov A. S. Myandin V. N. Filippov A. F. Khazov V. P. Lyutoev D. V. Kiseleva 2022-10-01T00:00:00Z https://doi.org/10.17072/psu.geol.21.3.193 https://doaj.org/article/261caafddb37429f99599d5c84e3ec64 EN RU eng rus Perm Sate National Research University http://geology-vestnik.psu.ru/index.php/geology/article/view/453 https://doaj.org/toc/1994-3601 https://doaj.org/toc/2313-4798 1994-3601 2313-4798 doi:10.17072/psu.geol.21.3.193 https://doaj.org/article/261caafddb37429f99599d5c84e3ec64 Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 21, Iss 3, Pp 193-215 (2022) толбачинское трещинное извержение эффузивы петро-минералого-геохимические свойства Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.17072/psu.geol.21.3.193 2023-02-19T01:47:30Z The results of comprehensive petrological, geochemical, and mineralogical studies of effusive volcanic rocks from the diamond-bearing Tolbachik fissure eruption of 2012-2013 (TTI-50) are summarized. It is concluded that the eruption was two-phase, which began with a short-term eruption of trachybasalts and continued with the formation of trachyandesite basalts. In comparison with lavas from other Tolbachik eruptions (BTTI, BD), the studied volcanic rocks are characterized by higher alkalinity and high K content (up to shoshonites), but lower Mg content. In terms of geochemical properties, they correspond to riftogenic magmatites formed due to the deep-mantle chamber of picrite magma. The studied volcanic rocks are characterized by widely varying vesicularity up to bubbly lavas, which comprise 80-90% of volcanic glass, and whose degree of recrystallization varies from maximum in basaltic trachyandesite to minimum in trachyandesitebasalt bomb. According to the degree of iron oxidation in the glass phase, volcanics correspond to the products of terrestrial eruptions in an island-arc or continental-rift geodynamic setting. The microlites are dominated by olivine Fo56-84, plagioclases An87±9 Ab9±10 Ort4±2, and spinel solid solutions based on magnetite, magnoferrite, ulvite, and cuprospinel. Individuals of decomposition in phase-heterogeneous grains of magnetite are represented by hemoilmenite and ilmenite. As accessory microminerals, jirite-spionkopite of composition Cu1.7S-Cu1.32S, native iron composed of Fe75Sn4(Cu,Mn,Cr), and native copper of composition Cu7-10(Sn0.9-1.8Fe0.1-0.2)1-2 Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Tolbachik ENVELOPE(159.960,159.960,55.537,55.537) Вестник Пермского университета. Геология 21 3 193 215 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
толбачинское трещинное извержение эффузивы петро-минералого-геохимические свойства Geology QE1-996.5 |
spellingShingle |
толбачинское трещинное извержение эффузивы петро-минералого-геохимические свойства Geology QE1-996.5 V. I. Silaev L. P. Anikin G. A. Karpov D. N. Remizov A. S. Myandin V. N. Filippov A. F. Khazov V. P. Lyutoev D. V. Kiseleva Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
topic_facet |
толбачинское трещинное извержение эффузивы петро-минералого-геохимические свойства Geology QE1-996.5 |
description |
The results of comprehensive petrological, geochemical, and mineralogical studies of effusive volcanic rocks from the diamond-bearing Tolbachik fissure eruption of 2012-2013 (TTI-50) are summarized. It is concluded that the eruption was two-phase, which began with a short-term eruption of trachybasalts and continued with the formation of trachyandesite basalts. In comparison with lavas from other Tolbachik eruptions (BTTI, BD), the studied volcanic rocks are characterized by higher alkalinity and high K content (up to shoshonites), but lower Mg content. In terms of geochemical properties, they correspond to riftogenic magmatites formed due to the deep-mantle chamber of picrite magma. The studied volcanic rocks are characterized by widely varying vesicularity up to bubbly lavas, which comprise 80-90% of volcanic glass, and whose degree of recrystallization varies from maximum in basaltic trachyandesite to minimum in trachyandesitebasalt bomb. According to the degree of iron oxidation in the glass phase, volcanics correspond to the products of terrestrial eruptions in an island-arc or continental-rift geodynamic setting. The microlites are dominated by olivine Fo56-84, plagioclases An87±9 Ab9±10 Ort4±2, and spinel solid solutions based on magnetite, magnoferrite, ulvite, and cuprospinel. Individuals of decomposition in phase-heterogeneous grains of magnetite are represented by hemoilmenite and ilmenite. As accessory microminerals, jirite-spionkopite of composition Cu1.7S-Cu1.32S, native iron composed of Fe75Sn4(Cu,Mn,Cr), and native copper of composition Cu7-10(Sn0.9-1.8Fe0.1-0.2)1-2 |
format |
Article in Journal/Newspaper |
author |
V. I. Silaev L. P. Anikin G. A. Karpov D. N. Remizov A. S. Myandin V. N. Filippov A. F. Khazov V. P. Lyutoev D. V. Kiseleva |
author_facet |
V. I. Silaev L. P. Anikin G. A. Karpov D. N. Remizov A. S. Myandin V. N. Filippov A. F. Khazov V. P. Lyutoev D. V. Kiseleva |
author_sort |
V. I. Silaev |
title |
Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
title_short |
Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
title_full |
Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
title_fullStr |
Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
title_full_unstemmed |
Bubbling Lavas of the Diamond-Bearing Tolbachik Fissure Eruption of 2012-2013 (TTE-50, Kamchatka) |
title_sort |
bubbling lavas of the diamond-bearing tolbachik fissure eruption of 2012-2013 (tte-50, kamchatka) |
publisher |
Perm Sate National Research University |
publishDate |
2022 |
url |
https://doi.org/10.17072/psu.geol.21.3.193 https://doaj.org/article/261caafddb37429f99599d5c84e3ec64 |
long_lat |
ENVELOPE(159.960,159.960,55.537,55.537) |
geographic |
Tolbachik |
geographic_facet |
Tolbachik |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 21, Iss 3, Pp 193-215 (2022) |
op_relation |
http://geology-vestnik.psu.ru/index.php/geology/article/view/453 https://doaj.org/toc/1994-3601 https://doaj.org/toc/2313-4798 1994-3601 2313-4798 doi:10.17072/psu.geol.21.3.193 https://doaj.org/article/261caafddb37429f99599d5c84e3ec64 |
op_doi |
https://doi.org/10.17072/psu.geol.21.3.193 |
container_title |
Вестник Пермского университета. Геология |
container_volume |
21 |
container_issue |
3 |
container_start_page |
193 |
op_container_end_page |
215 |
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1766051616453033984 |