Mesoarchean mafic dykes of the Belomorian eclogite province (Gridino Village Area, Russia)

Dokukina, K.A.; Kaulina, T.V.; Konilov, A.N.; Natapov, L.M.; Belousova, E.A.; Van K, V.; Simakin, S.G.; Lepekhina, E.N.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 6 декабря 2018 г.

Авторы: Dokukina K.A., Kaulina T.V., Konilov A.N., Natapov L.M., Belousova E.A., Van K V., Simakin S.G., Lepekhina E.N.
Журнал: Doklady Earth Sciences
Том: 457
Номер: 1
Год издания: 2014
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 824
Последняя страница: 830
DOI: 10.1134/S1028334X14070034
Аннотация: Archean processes of eclogitization in the Gridino metamorphic association (the Belomorian eclogite province) developed in mafic dykes, boudins, and acidic rocks of the Archean continental crusts. To determine the U–Pb age of the intrusion of the latest dykes, the geochronological samples were taken from the dyke of ferriferious metagabbro that cross_cuts the dyke of eclogitzed and granulitized olivine gabbronorite. The igneous zircons were dated by the SHRIMP II technique. The zircons showed a concordia age of 2846 ± 7 Ma, which is considered as the time of intrusion of a mafic melt. The younger low_thorium zircon rims of 2.78–2.81 Ga age around the igneous cores are typical formations that appeared under metamorphic conditions in equilibrium with a migmatite melt, and may characterize the time of formation of the granite leucosome under metamorphism, probably of eclogite facies.
Добавил в систему: Ван Константин Владимирович

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Mesoarchean mafic dykes of the Belomorian eclogite province (Gridino Village Area, Russia)статья

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