PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS
Evidence of melt-rock reaction between suprasubduction zone (SSZ) peridotites and island arc boninititc and tholeiitic melts are identified. This process is the cause of replacive dunites and pyroxenite veins forming, which are represent the ways of island-arc melts migration. The peridotite-melt in...
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| Language: | English |
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2017-09-01
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| Series: | Геодинамика и тектонофизика |
| Online Access: | https://www.gt-crust.ru/jour/article/view/410 |
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| author | A. A. Karimov M A. Gornova V. A. Belyaev |
| author_facet | A. A. Karimov M A. Gornova V. A. Belyaev |
| author_sort | A. A. Karimov |
| collection | DOAJ |
| description | Evidence of melt-rock reaction between suprasubduction zone (SSZ) peridotites and island arc boninititc and tholeiitic melts are identified. This process is the cause of replacive dunites and pyroxenite veins forming, which are represent the ways of island-arc melts migration. The peridotite-melt interaction is confirmed by compositional features of rocks and minerals. Influence of boninitic melt in peridotites of South Sandwich island arc leads to increasing of TiO2 and Cr-number (Cr#) in spinels [Pearce et al., 2000] e.g. REE patterns of clinopyroxene from Voykar are equilibrium to boninitic melts [Belousov et al., 2009]. We show that pyroxenites are formed sequential, orthopyroxenites are originated firstly, websterites – after, and the main forming process is interaction of SSZ peridotites with percolating boninite-like melts. |
| format | Article |
| id | doaj-art-e2b4f060ec6f453abd23719e0df9f3b3 |
| institution | Kabale University |
| issn | 2078-502X |
| language | English |
| publishDate | 2017-09-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-e2b4f060ec6f453abd23719e0df9f3b32025-08-20T03:44:20ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2017-09-018348348810.5800/GT-2017-8-3-0269269PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALSA. A. Karimov0M A. Gornova1V. A. Belyaev2A.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASA.P. Vinogradov Institute of Geochemistry, Siberian Branch of RASA.P. Vinogradov Institute of Geochemistry, Siberian Branch of RAS; Institute of Earth Sciences, Academia SinicaEvidence of melt-rock reaction between suprasubduction zone (SSZ) peridotites and island arc boninititc and tholeiitic melts are identified. This process is the cause of replacive dunites and pyroxenite veins forming, which are represent the ways of island-arc melts migration. The peridotite-melt interaction is confirmed by compositional features of rocks and minerals. Influence of boninitic melt in peridotites of South Sandwich island arc leads to increasing of TiO2 and Cr-number (Cr#) in spinels [Pearce et al., 2000] e.g. REE patterns of clinopyroxene from Voykar are equilibrium to boninitic melts [Belousov et al., 2009]. We show that pyroxenites are formed sequential, orthopyroxenites are originated firstly, websterites – after, and the main forming process is interaction of SSZ peridotites with percolating boninite-like melts.https://www.gt-crust.ru/jour/article/view/410 |
| spellingShingle | A. A. Karimov M A. Gornova V. A. Belyaev PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS Геодинамика и тектонофизика |
| title | PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS |
| title_full | PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS |
| title_fullStr | PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS |
| title_full_unstemmed | PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS |
| title_short | PYROXENITE VEINS WITHIN SSZ PERIDOTITES – EVIDENCE OF MELT-ROCK INTERACTION (EGIINGOL MASSIF), MAJOR AND TRACE ELEMENT COMPOSITION OF MINERALS |
| title_sort | pyroxenite veins within ssz peridotites evidence of melt rock interaction egiingol massif major and trace element composition of minerals |
| url | https://www.gt-crust.ru/jour/article/view/410 |
| work_keys_str_mv | AT aakarimov pyroxeniteveinswithinsszperidotitesevidenceofmeltrockinteractionegiingolmassifmajorandtraceelementcompositionofminerals AT magornova pyroxeniteveinswithinsszperidotitesevidenceofmeltrockinteractionegiingolmassifmajorandtraceelementcompositionofminerals AT vabelyaev pyroxeniteveinswithinsszperidotitesevidenceofmeltrockinteractionegiingolmassifmajorandtraceelementcompositionofminerals |