Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems
We present new major and trace element, high-precision Sr-Nd-Pb (double spike), and Oisotope data for the whole range of rocks from the Holocene Tolbachik volcanic field in the Central Kamchatka Depression (CKD). The Tolbachik rocks range from high-Mg basalts to low-Mg basaltic trachyandesites. The...
Published in: | Journal of Volcanology and Geothermal Research |
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Online Access: | https://oceanrep.geomar.de/id/eprint/29517/ https://oceanrep.geomar.de/id/eprint/29517/1/2015_Portnyagin_JVGR_Tolbachik.pdf https://oceanrep.geomar.de/id/eprint/29517/7/Portnyagin.pdf https://oceanrep.geomar.de/id/eprint/29517/13/mmc1.xlsx https://doi.org/10.1016/j.jvolgeores.2015.08.015 |
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ftoceanrep:oai:oceanrep.geomar.de:29517 2023-05-15T16:59:06+02:00 Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems Portnyagin, Maxim V. Duggen, Svend Hauff, Folkmar Mironov, Nikita Bindeman, Ilya Thirlwall, Matthew Hoernle, Kaj 2015-12-01 text other https://oceanrep.geomar.de/id/eprint/29517/ https://oceanrep.geomar.de/id/eprint/29517/1/2015_Portnyagin_JVGR_Tolbachik.pdf https://oceanrep.geomar.de/id/eprint/29517/7/Portnyagin.pdf https://oceanrep.geomar.de/id/eprint/29517/13/mmc1.xlsx https://doi.org/10.1016/j.jvolgeores.2015.08.015 en eng Elsevier https://oceanrep.geomar.de/id/eprint/29517/1/2015_Portnyagin_JVGR_Tolbachik.pdf https://oceanrep.geomar.de/id/eprint/29517/7/Portnyagin.pdf https://oceanrep.geomar.de/id/eprint/29517/13/mmc1.xlsx Portnyagin, M. V. , Duggen, S., Hauff, F. , Mironov, N., Bindeman, I., Thirlwall, M. and Hoernle, K. (2015) Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems. Open Access Journal of Volcanology and Geothermal Research, 307 . pp. 133-155. DOI 10.1016/j.jvolgeores.2015.08.015 <https://doi.org/10.1016/j.jvolgeores.2015.08.015>. doi:10.1016/j.jvolgeores.2015.08.015 info:eu-repo/semantics/openAccess Article PeerReviewed 2015 ftoceanrep https://doi.org/10.1016/j.jvolgeores.2015.08.015 2023-04-07T15:20:25Z We present new major and trace element, high-precision Sr-Nd-Pb (double spike), and Oisotope data for the whole range of rocks from the Holocene Tolbachik volcanic field in the Central Kamchatka Depression (CKD). The Tolbachik rocks range from high-Mg basalts to low-Mg basaltic trachyandesites. The rocks considered in this paper represent mostly Late Holocene eruptions (using tephrochronological dating), including historic ones in 1941, 1975-1976 and 2012-2013. Major compositional features of the Tolbachik volcanic rocks include the prolonged predominance of one erupted magma type, close association of middle-K primitive and high-K evolved rocks, large variations in incompatible element abundances and ratios but narrow range in isotopic composition. We quantify the conditions of the Tolbachik magma origin and evolution and revise previously proposed models. We conclude that all Tolbachik rocks are genetically related by crystal fractionation of medium-K primary magmas with only a small range in trace element and isotope composition. The primary Tolbachik magmas contain ~14 wt% MgO and ~4% wt% H2O and originated by partial melting (~6%) of moderately depleted mantle peridotite with Indian-MORB-type isotopic composition at temperature of ~1250oC and pressure of ~2 GPa. The melting of the mantle wedge was triggered by slab-derived hydrous melts formed at ~2.8 GPa and ~725oC from a mixture of sediments and MORB- and Meiji- type altered oceanic crust. The primary magmas experienced a complex open-system evolution termed Recharge-Evacuation-Fractional Crystallization (REFC). First the original primary magmas underwent open-system crystal fractionation combined with periodic recharge of the magma chamber with more primitive magma, followed by mixing of both magma types, further fractionation and finally eruption. Evolved high-K basalts, which predominate in the Tolbachik field, and basaltic trachyandesites erupted in 2012-2013 approach steady-state REFC liquid compositions at different eruption or replenishment rates. ... Article in Journal/Newspaper Kamchatka OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Indian Tolbachik ENVELOPE(159.960,159.960,55.537,55.537) Journal of Volcanology and Geothermal Research 307 133 155 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We present new major and trace element, high-precision Sr-Nd-Pb (double spike), and Oisotope data for the whole range of rocks from the Holocene Tolbachik volcanic field in the Central Kamchatka Depression (CKD). The Tolbachik rocks range from high-Mg basalts to low-Mg basaltic trachyandesites. The rocks considered in this paper represent mostly Late Holocene eruptions (using tephrochronological dating), including historic ones in 1941, 1975-1976 and 2012-2013. Major compositional features of the Tolbachik volcanic rocks include the prolonged predominance of one erupted magma type, close association of middle-K primitive and high-K evolved rocks, large variations in incompatible element abundances and ratios but narrow range in isotopic composition. We quantify the conditions of the Tolbachik magma origin and evolution and revise previously proposed models. We conclude that all Tolbachik rocks are genetically related by crystal fractionation of medium-K primary magmas with only a small range in trace element and isotope composition. The primary Tolbachik magmas contain ~14 wt% MgO and ~4% wt% H2O and originated by partial melting (~6%) of moderately depleted mantle peridotite with Indian-MORB-type isotopic composition at temperature of ~1250oC and pressure of ~2 GPa. The melting of the mantle wedge was triggered by slab-derived hydrous melts formed at ~2.8 GPa and ~725oC from a mixture of sediments and MORB- and Meiji- type altered oceanic crust. The primary magmas experienced a complex open-system evolution termed Recharge-Evacuation-Fractional Crystallization (REFC). First the original primary magmas underwent open-system crystal fractionation combined with periodic recharge of the magma chamber with more primitive magma, followed by mixing of both magma types, further fractionation and finally eruption. Evolved high-K basalts, which predominate in the Tolbachik field, and basaltic trachyandesites erupted in 2012-2013 approach steady-state REFC liquid compositions at different eruption or replenishment rates. ... |
format |
Article in Journal/Newspaper |
author |
Portnyagin, Maxim V. Duggen, Svend Hauff, Folkmar Mironov, Nikita Bindeman, Ilya Thirlwall, Matthew Hoernle, Kaj |
spellingShingle |
Portnyagin, Maxim V. Duggen, Svend Hauff, Folkmar Mironov, Nikita Bindeman, Ilya Thirlwall, Matthew Hoernle, Kaj Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
author_facet |
Portnyagin, Maxim V. Duggen, Svend Hauff, Folkmar Mironov, Nikita Bindeman, Ilya Thirlwall, Matthew Hoernle, Kaj |
author_sort |
Portnyagin, Maxim V. |
title |
Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
title_short |
Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
title_full |
Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
title_fullStr |
Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
title_full_unstemmed |
Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems |
title_sort |
geochemistry of the late holocene rocks from the tolbachik volcanic field, kamchatka: quantitative modelling of subduction-related open magmatic systems |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://oceanrep.geomar.de/id/eprint/29517/ https://oceanrep.geomar.de/id/eprint/29517/1/2015_Portnyagin_JVGR_Tolbachik.pdf https://oceanrep.geomar.de/id/eprint/29517/7/Portnyagin.pdf https://oceanrep.geomar.de/id/eprint/29517/13/mmc1.xlsx https://doi.org/10.1016/j.jvolgeores.2015.08.015 |
long_lat |
ENVELOPE(159.960,159.960,55.537,55.537) |
geographic |
Indian Tolbachik |
geographic_facet |
Indian Tolbachik |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
https://oceanrep.geomar.de/id/eprint/29517/1/2015_Portnyagin_JVGR_Tolbachik.pdf https://oceanrep.geomar.de/id/eprint/29517/7/Portnyagin.pdf https://oceanrep.geomar.de/id/eprint/29517/13/mmc1.xlsx Portnyagin, M. V. , Duggen, S., Hauff, F. , Mironov, N., Bindeman, I., Thirlwall, M. and Hoernle, K. (2015) Geochemistry of the Late Holocene rocks from the Tolbachik volcanic field, Kamchatka: Quantitative modelling of subduction-related open magmatic systems. Open Access Journal of Volcanology and Geothermal Research, 307 . pp. 133-155. DOI 10.1016/j.jvolgeores.2015.08.015 <https://doi.org/10.1016/j.jvolgeores.2015.08.015>. doi:10.1016/j.jvolgeores.2015.08.015 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2015.08.015 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
307 |
container_start_page |
133 |
op_container_end_page |
155 |
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1766051283521765376 |