JUVENILE HELIUM IN ARCHEAN ENDERBITES AND ALKALINE GRANITES OF THE KOLA PENINSULA

dc.contributor.author	Vetrin V.R.
dc.contributor.author	Kamenskii I.L.
dc.contributor.author	Ikorskii S.V.
dc.contributor.author	Gannibal M.A.
dc.date.accessioned	2022-01-12T07:50:45Z
dc.date.available	2022-01-12T07:50:45Z
dc.date.issued	2003
dc.identifier	https://www.elibrary.ru/item.asp?id=13423339
dc.identifier.citation	Geochemistry International, 2003, 41, 7, 631-636
dc.identifier.issn	0016-7029
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/34209
dc.description.abstract	The He isotopic composition was studied in Archean enderbites, aluminous gneisses, and alkaline granites of the Kola Peninsula. It was shown that enderbites formed after intrusive protoliths during their granalite metamorphism presumably retained He that was trapped by crystallizing magmatic minerals. The mantle component was found in helium extracted by high-temperature (≥1450°C) annealing of fluid inclusions in accessory ilmenite from alkaline granites of the Ponoi Massif. The fluid trapped during the crystallization of alkaline granites contained 3-7% of mantle component and might have been formed by mixing of predominant crustal radiogenic He and juvenile 3He that was supplied from a deep-seated mantle source in a ratio of about (14-42) : 1.
dc.subject	Archean
dc.title	JUVENILE HELIUM IN ARCHEAN ENDERBITES AND ALKALINE GRANITES OF THE KOLA PENINSULA
dc.type	Статья
dc.subject.age	Precambrian::Archean
dc.subject.age	Докембрий::Архей	ru

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