The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka)
Contents of platinum group elements (PGE—Os, Ir, Ru, Rh, Pt, and Pd) and rhenium in basalts of different geochemical types from the ophiolite complex of the Kamchatsky Mys Peninsula have been determined by the isotope dilution-mass spectrometry method. The total contents of PGE in different basalts...
Published in: | Russian Geology and Geophysics |
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ftoceanrep:oai:oceanrep.geomar.de:45096 2023-05-15T16:59:15+02:00 The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) Savelyev, D. P. Palesskii, S. V. Portnyagin, Maxim V. 2018-12-12 text https://oceanrep.geomar.de/id/eprint/45096/ https://oceanrep.geomar.de/id/eprint/45096/1/Savelyev.pdf https://doi.org/10.1016/j.rgg.2018.12.005 en eng Elsevier https://oceanrep.geomar.de/id/eprint/45096/1/Savelyev.pdf Savelyev, D. P., Palesskii, S. V. and Portnyagin, M. V. (2018) The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka). Russian Geology and Geophysics, 59 (12). pp. 1592-1602. DOI 10.1016/j.rgg.2018.12.005 <https://doi.org/10.1016/j.rgg.2018.12.005>. doi:10.1016/j.rgg.2018.12.005 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2018 ftoceanrep https://doi.org/10.1016/j.rgg.2018.12.005 2023-04-07T15:42:54Z Contents of platinum group elements (PGE—Os, Ir, Ru, Rh, Pt, and Pd) and rhenium in basalts of different geochemical types from the ophiolite complex of the Kamchatsky Mys Peninsula have been determined by the isotope dilution-mass spectrometry method. The total contents of PGE in different basalts are commensurate (1.4-3.6 ppb), but the element ratios vary considerably. A specific feature of the rocks is the low degree of PGE fractionation (Pd/Ir = 0.9-6.6, Pt/Pd = 1.0-7.3), which makes them similar to the Hawaiian tholeiitic basalts and picrites. The most fractionated PGE pattern is observed for alkali basalt (Pd/Ir = 6.6), and the least fractionated one, for E-MORB (Pd/Ir = 1.7). The similarity of the PGE patterns of basalts of different geochemical types suggests their similar mantle sources. We propose a model explaining the geochemical features of the basalts of the Kamchatsky Mys ophiolite complex by an impurity of the Earth’s core material in the plume source. The Ir/Pd-Ru/Pd and Pd/10-Ir-Ru discrimination diagrams can be used to identify enriched (plume) basalts based on their PGE content. Article in Journal/Newspaper Kamchatka OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Russian Geology and Geophysics 59 12 1592 1602 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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English |
description |
Contents of platinum group elements (PGE—Os, Ir, Ru, Rh, Pt, and Pd) and rhenium in basalts of different geochemical types from the ophiolite complex of the Kamchatsky Mys Peninsula have been determined by the isotope dilution-mass spectrometry method. The total contents of PGE in different basalts are commensurate (1.4-3.6 ppb), but the element ratios vary considerably. A specific feature of the rocks is the low degree of PGE fractionation (Pd/Ir = 0.9-6.6, Pt/Pd = 1.0-7.3), which makes them similar to the Hawaiian tholeiitic basalts and picrites. The most fractionated PGE pattern is observed for alkali basalt (Pd/Ir = 6.6), and the least fractionated one, for E-MORB (Pd/Ir = 1.7). The similarity of the PGE patterns of basalts of different geochemical types suggests their similar mantle sources. We propose a model explaining the geochemical features of the basalts of the Kamchatsky Mys ophiolite complex by an impurity of the Earth’s core material in the plume source. The Ir/Pd-Ru/Pd and Pd/10-Ir-Ru discrimination diagrams can be used to identify enriched (plume) basalts based on their PGE content. |
format |
Article in Journal/Newspaper |
author |
Savelyev, D. P. Palesskii, S. V. Portnyagin, Maxim V. |
spellingShingle |
Savelyev, D. P. Palesskii, S. V. Portnyagin, Maxim V. The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
author_facet |
Savelyev, D. P. Palesskii, S. V. Portnyagin, Maxim V. |
author_sort |
Savelyev, D. P. |
title |
The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
title_short |
The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
title_full |
The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
title_fullStr |
The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
title_full_unstemmed |
The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka) |
title_sort |
source of platinum group elements in basalts of the ophiolite complex of the kamchatsky mys peninsula (eastern kamchatka) |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/45096/ https://oceanrep.geomar.de/id/eprint/45096/1/Savelyev.pdf https://doi.org/10.1016/j.rgg.2018.12.005 |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
https://oceanrep.geomar.de/id/eprint/45096/1/Savelyev.pdf Savelyev, D. P., Palesskii, S. V. and Portnyagin, M. V. (2018) The source of platinum group elements in basalts of the ophiolite complex of the Kamchatsky Mys Peninsula (Eastern Kamchatka). Russian Geology and Geophysics, 59 (12). pp. 1592-1602. DOI 10.1016/j.rgg.2018.12.005 <https://doi.org/10.1016/j.rgg.2018.12.005>. doi:10.1016/j.rgg.2018.12.005 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.rgg.2018.12.005 |
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Russian Geology and Geophysics |
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59 |
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12 |
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1592 |
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1602 |
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1766051479905370112 |