Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry
This paper reports the results of a study of naturally and experimentally quenched melt inclusions in magnesian olivine (Fo 77-89) from a basalt sample from the Karymsky volcanic center, which is located in the middle segment of the Eastern Volcanic Front of Kamchatka. The conditions of parental mag...
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Pleiades Publishing
2019
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Online Access: | https://oceanrep.geomar.de/id/eprint/46804/ https://oceanrep.geomar.de/id/eprint/46804/1/Tobelko.pdf https://doi.org/10.1134/S0869591119030068 |
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ftoceanrep:oai:oceanrep.geomar.de:46804 2023-05-15T16:58:40+02:00 Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry Tobelko, Daria Portnyagin, Maxim V. Krasheninnikov, S. P. Grib, E. N. Plechov, P. Yu 2019-05 text https://oceanrep.geomar.de/id/eprint/46804/ https://oceanrep.geomar.de/id/eprint/46804/1/Tobelko.pdf https://doi.org/10.1134/S0869591119030068 en eng Pleiades Publishing https://oceanrep.geomar.de/id/eprint/46804/1/Tobelko.pdf Tobelko, D., Portnyagin, M. V. , Krasheninnikov, S. P., Grib, E. N. and Plechov, P. Y. (2019) Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry. Petrology, 27 (3). pp. 243-264. DOI 10.1134/S0869591119030068 <https://doi.org/10.1134/S0869591119030068>. doi:10.1134/S0869591119030068 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2019 ftoceanrep https://doi.org/10.1134/S0869591119030068 2023-04-07T15:45:55Z This paper reports the results of a study of naturally and experimentally quenched melt inclusions in magnesian olivine (Fo 77-89) from a basalt sample from the Karymsky volcanic center, which is located in the middle segment of the Eastern Volcanic Front of Kamchatka. The conditions of parental magma formation were estimated using modern methods of trace-element thermometry. Based on direct H 2 O measurements in inclusions and thermometry of coexisting olivine and spinel, it was shown that the parent melts contained at least 4.5 wt % H 2 O and crystallized at a temperature of 1114 ± 27°C and an oxygen fugacity of ΔQFM = 1.5 ± 0.4. The obtained estimates of H 2 O content and crystallization temperature are among the first and currently most reliable data for the Eastern Volcanic Front of Kamchatka. The primary melt of the Karymsky volcanic center was derived from peridotitic material and could be produced by ~12-17% melting of an enriched MORB source (E-DMM) at ~1230-1250°C and ~1.5 GPa. Our estimates of mantle melting temperature beneath Kamchatka are slightly lower than values reported previously and up to 50°C lower than the dry peridotite solidus, which indicates the influence of a slab-derived hydrous melt. The combined approach to the estimation of the initial H 2 O content of melt employed in this study can provide a more reliable data in future investigations, and its application will probably decrease the existing temperature estimates for the mantle wedge above subduction zones. Article in Journal/Newspaper Kamchatka OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Petrology 27 3 243 264 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
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English |
description |
This paper reports the results of a study of naturally and experimentally quenched melt inclusions in magnesian olivine (Fo 77-89) from a basalt sample from the Karymsky volcanic center, which is located in the middle segment of the Eastern Volcanic Front of Kamchatka. The conditions of parental magma formation were estimated using modern methods of trace-element thermometry. Based on direct H 2 O measurements in inclusions and thermometry of coexisting olivine and spinel, it was shown that the parent melts contained at least 4.5 wt % H 2 O and crystallized at a temperature of 1114 ± 27°C and an oxygen fugacity of ΔQFM = 1.5 ± 0.4. The obtained estimates of H 2 O content and crystallization temperature are among the first and currently most reliable data for the Eastern Volcanic Front of Kamchatka. The primary melt of the Karymsky volcanic center was derived from peridotitic material and could be produced by ~12-17% melting of an enriched MORB source (E-DMM) at ~1230-1250°C and ~1.5 GPa. Our estimates of mantle melting temperature beneath Kamchatka are slightly lower than values reported previously and up to 50°C lower than the dry peridotite solidus, which indicates the influence of a slab-derived hydrous melt. The combined approach to the estimation of the initial H 2 O content of melt employed in this study can provide a more reliable data in future investigations, and its application will probably decrease the existing temperature estimates for the mantle wedge above subduction zones. |
format |
Article in Journal/Newspaper |
author |
Tobelko, Daria Portnyagin, Maxim V. Krasheninnikov, S. P. Grib, E. N. Plechov, P. Yu |
spellingShingle |
Tobelko, Daria Portnyagin, Maxim V. Krasheninnikov, S. P. Grib, E. N. Plechov, P. Yu Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
author_facet |
Tobelko, Daria Portnyagin, Maxim V. Krasheninnikov, S. P. Grib, E. N. Plechov, P. Yu |
author_sort |
Tobelko, Daria |
title |
Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
title_short |
Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
title_full |
Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
title_fullStr |
Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
title_full_unstemmed |
Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry |
title_sort |
compositions and formation conditions of primitive magmas of the karymsky volcanic center, kamchatka: evidence from melt inclusions and trace-element thermobarometry |
publisher |
Pleiades Publishing |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/46804/ https://oceanrep.geomar.de/id/eprint/46804/1/Tobelko.pdf https://doi.org/10.1134/S0869591119030068 |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
https://oceanrep.geomar.de/id/eprint/46804/1/Tobelko.pdf Tobelko, D., Portnyagin, M. V. , Krasheninnikov, S. P., Grib, E. N. and Plechov, P. Y. (2019) Compositions and Formation Conditions of Primitive Magmas of the Karymsky Volcanic Center, Kamchatka: Evidence from Melt Inclusions and Trace-Element Thermobarometry. Petrology, 27 (3). pp. 243-264. DOI 10.1134/S0869591119030068 <https://doi.org/10.1134/S0869591119030068>. doi:10.1134/S0869591119030068 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1134/S0869591119030068 |
container_title |
Petrology |
container_volume |
27 |
container_issue |
3 |
container_start_page |
243 |
op_container_end_page |
264 |
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1766050742119956480 |