Инд. авторы: Panina L.I., Isakova A.T., Sazonov A.M.
Заглавие: The Olivinite of the Krestovskaya Intrusion-the Product of Larnite-Normative Alkali Ultramafic Magma: Melt Inclusion Data
Библ. ссылка: Panina L.I., Isakova A.T., Sazonov A.M. The Olivinite of the Krestovskaya Intrusion-the Product of Larnite-Normative Alkali Ultramafic Magma: Melt Inclusion Data // Petrology. - 2018. - Vol.26. - Iss. 2. - P.167-180. - ISSN 0869-5911. - EISSN 1556-2085.
Идентиф-ры: DOI: 10.1134/S0869591118020042; WoS: 000429120100004;
Реферат: eng: Olivinites of the Krestovskaya Intrusion consist of predominant amount of olivine, and minor Ti-magnetite, perovskite, and clinopyroxene (from single grain to a few vol %). Primary crystallized melt inclusions were found and studied in olivine, perovskite, and diopside of the olivinites. Daughter phases in olivine-hosted melt inclusions are monticellite, perovskite, kalsilite, phlogopite, magnetite, apatite, and garnet andradite. Perovskite-hosted melt inclusions contain such daughter phases as kalsilite, pectolite, clinopyroxene, biotite, magnetite, and apatite, while daughter phases in clinopyroxene-hosted melt inclusions are represented by kalsilite, phlogopite, magnetite, and apatite. According to melt inclusion heating experiments, olivine crystallized from above 1230A degrees C to 1180A degrees C. It was followed by perovskite crystallizing at ae1200A degrees C and clinopyroxene, at 1170A degrees C. According to analysis of quenched glass of the melt inclusions, the chemical composition of melts hosted in the minerals corresponds to the larnite-normative alkali ultramafic (kamafugite) magma significantly enriched in incompatible elements. The high incompatible element concentrations, its distribution, and geochemical indicator ratios evidenced that the magma was derived by the partial melting of garnet-bearing undepleted mantle.
Ключевые слова: ROCKS; MANTLE; SIBERIA; ELEMENTS; MEIMECHITES; CARBONATITE; MASSIF; ORIGIN; COMPLEXES; CRYSTALLIZATION;
Издано: 2018
Физ. хар-ка: с.167-180