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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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- Interphase partitioning of trace elements in the deep transition zone and uppermost lower mantle: evidence from experiments on partial melting of model pyrolite at 21-24 GPa and 1100-2400°Cдоклад на конференции
- Авторы: Tamarova A.P., Bobrov A.V., Irifune T., Bindi L., Sirotkina E.A.
- Международная Конференция : XXII meeting of the International Mineralogical Association
- Даты проведения конференции: 13-17 августа 2018
- Дата доклада: 14 августа 2018
- Тип доклада: Стендовый
- Докладчик: не указан
- Место проведения: Мельбурн, Australia
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Аннотация доклада:
Partitioning of trace and rare-earth elements between mantle minerals and melts at high pressures and temperatures is of considerable importance for all geochemical models involving melting of the Earth's mantle.It is shown that bridgmanite and ferropericlase are enriched with HREEs. Pyrolite with carbonate is characterized by an increase in the partitioning coefficients for light rare elements. For calcium perovskite, on the contrary, light enrichment and depletion of heavy rare earths are observed. Partition coefficients (CaPrv/L) of REEs in calcium perovskite decrease with temperature. The results obtained indicate that under the conditions of the Earth’s lower mantle, trace and rare-earth elements may be accumulated not only in the CaSiO3 perovskite (Ringwood et al., 1988), but in ferropericlase and bridgmanite as well.
- Добавил в систему: Тамарова Анастасия Павловна