Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu
We present newly acquired data on the trace element composition and Sr–Nd–Pb-O isotopes of Pliocene – Holocene basalts of the Medvezhiy caldera located on the Iturup Island, Kuril arc. With its unique rhenium mineralization and high-Mg basalt volcanism, it is the largest caldera on the volcanic fron...
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Taylor & Francis
2022
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.19243875 https://tandf.figshare.com/articles/dataset/Basaltic_volcanism_of_Medvezhia_caldera_on_the_Iturup_Island_of_Kurile_Isles_impact_of_regional_tectonics_on_subduction_magmatism_Martynov_Yu_Rybin_V_Chibisova_V_Ostapenko_D_S_Davydova_M_Yu/19243875 |
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ftdatacite:10.6084/m9.figshare.19243875 2023-05-15T16:59:29+02:00 Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu Marynov, Yurii Rybin, Alexander Chibisova, Marina Ostapenko, Dmitrii Davydova, Masha 2022 https://dx.doi.org/10.6084/m9.figshare.19243875 https://tandf.figshare.com/articles/dataset/Basaltic_volcanism_of_Medvezhia_caldera_on_the_Iturup_Island_of_Kurile_Isles_impact_of_regional_tectonics_on_subduction_magmatism_Martynov_Yu_Rybin_V_Chibisova_V_Ostapenko_D_S_Davydova_M_Yu/19243875 unknown Taylor & Francis https://dx.doi.org/10.1080/00206814.2022.2039885 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Physiology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Marine Biology Dataset dataset 2022 ftdatacite https://doi.org/10.6084/m9.figshare.19243875 https://doi.org/10.1080/00206814.2022.2039885 2022-03-10T16:37:03Z We present newly acquired data on the trace element composition and Sr–Nd–Pb-O isotopes of Pliocene – Holocene basalts of the Medvezhiy caldera located on the Iturup Island, Kuril arc. With its unique rhenium mineralization and high-Mg basalt volcanism, it is the largest caldera on the volcanic front of the Kurile Island arc. The calc-alkaline suite of rocks spanning the range from high-Mg basalts to high-Al basalts, has typical arc rock features, such as Nb-Ta depletion and LILE enrichment. The whole set of the caldera geochemical data is divided into two age units, pre- and postcaldera basalts. The precaldera basalts typify low-K, high-Al, basaltic suite of the frontal zones of «cold» subduction. PRIMACALC2 code and Arc Basalt Simulator version 3.1 forward model points to ~21.7% of partial melting of moderately depleted mantle peridotite with relatively high water content (~0.34 wt%) at the pressure of ~1.37 GPa. With similar isotope and trace element signatures, Late Pleistocene–Holocene basalts are marked by the high abundances of MgO (up to 11 wt %), but low Al2O3. The primary magmas were generated from depleted mantle with lower H2O content (~0.13%) and degree of partial melting (~9.5%), but at higher pressure (~1.77 GPa). The decompression scheme reproduces the fractionation trends of postcaldera magnesian basalts for most major elements but fails to explain the composition variations of the precaldera lavas. Their origin has been the matter of some complex processes in the shallow magma chamber. The abrupt change in the type of eruptions and magma composition of the caldera in Late Pleistocene–Holocene were related to a transformation of both the magma-feeding and melt generation systems as the result of geodynamic reorganization of the vast territory adjacent to the Sea of Japan and Kamchatka. Dataset Kamchatka DataCite Metadata Store (German National Library of Science and Technology) Davydova ENVELOPE(3.667,3.667,-72.083,-72.083) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Physiology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Marine Biology |
spellingShingle |
Physiology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Marine Biology Marynov, Yurii Rybin, Alexander Chibisova, Marina Ostapenko, Dmitrii Davydova, Masha Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
topic_facet |
Physiology FOS Biological sciences 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Marine Biology |
description |
We present newly acquired data on the trace element composition and Sr–Nd–Pb-O isotopes of Pliocene – Holocene basalts of the Medvezhiy caldera located on the Iturup Island, Kuril arc. With its unique rhenium mineralization and high-Mg basalt volcanism, it is the largest caldera on the volcanic front of the Kurile Island arc. The calc-alkaline suite of rocks spanning the range from high-Mg basalts to high-Al basalts, has typical arc rock features, such as Nb-Ta depletion and LILE enrichment. The whole set of the caldera geochemical data is divided into two age units, pre- and postcaldera basalts. The precaldera basalts typify low-K, high-Al, basaltic suite of the frontal zones of «cold» subduction. PRIMACALC2 code and Arc Basalt Simulator version 3.1 forward model points to ~21.7% of partial melting of moderately depleted mantle peridotite with relatively high water content (~0.34 wt%) at the pressure of ~1.37 GPa. With similar isotope and trace element signatures, Late Pleistocene–Holocene basalts are marked by the high abundances of MgO (up to 11 wt %), but low Al2O3. The primary magmas were generated from depleted mantle with lower H2O content (~0.13%) and degree of partial melting (~9.5%), but at higher pressure (~1.77 GPa). The decompression scheme reproduces the fractionation trends of postcaldera magnesian basalts for most major elements but fails to explain the composition variations of the precaldera lavas. Their origin has been the matter of some complex processes in the shallow magma chamber. The abrupt change in the type of eruptions and magma composition of the caldera in Late Pleistocene–Holocene were related to a transformation of both the magma-feeding and melt generation systems as the result of geodynamic reorganization of the vast territory adjacent to the Sea of Japan and Kamchatka. |
format |
Dataset |
author |
Marynov, Yurii Rybin, Alexander Chibisova, Marina Ostapenko, Dmitrii Davydova, Masha |
author_facet |
Marynov, Yurii Rybin, Alexander Chibisova, Marina Ostapenko, Dmitrii Davydova, Masha |
author_sort |
Marynov, Yurii |
title |
Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
title_short |
Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
title_full |
Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
title_fullStr |
Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
title_full_unstemmed |
Basaltic volcanism of Medvezhia caldera on the Iturup Island of Kurile Isles: impact of regional tectonics on subduction magmatism Martynov Yu.А., Rybin А.V., Chibisova М.V., Ostapenko D.S., Davydova M.Yu |
title_sort |
basaltic volcanism of medvezhia caldera on the iturup island of kurile isles: impact of regional tectonics on subduction magmatism martynov yu.а., rybin а.v., chibisova м.v., ostapenko d.s., davydova m.yu |
publisher |
Taylor & Francis |
publishDate |
2022 |
url |
https://dx.doi.org/10.6084/m9.figshare.19243875 https://tandf.figshare.com/articles/dataset/Basaltic_volcanism_of_Medvezhia_caldera_on_the_Iturup_Island_of_Kurile_Isles_impact_of_regional_tectonics_on_subduction_magmatism_Martynov_Yu_Rybin_V_Chibisova_V_Ostapenko_D_S_Davydova_M_Yu/19243875 |
long_lat |
ENVELOPE(3.667,3.667,-72.083,-72.083) |
geographic |
Davydova |
geographic_facet |
Davydova |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
https://dx.doi.org/10.1080/00206814.2022.2039885 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.19243875 https://doi.org/10.1080/00206814.2022.2039885 |
_version_ |
1766051755314905088 |