NEW ISOTOPIC DATA ON THE PROTOLITH AGE AND EVOLUTIONARY STAGES OF THE CHUPA FORMATION, BELOMORIAN BELT

dc.contributor.author	Bibikova E.V.
dc.contributor.author	Glebovitskii V.A.
dc.contributor.author	Claesson S.
dc.date.accessioned	2021-02-16T10:52:27Z
dc.date.available	2021-02-16T10:52:27Z
dc.date.issued	2001
dc.identifier	https://elibrary.ru/item.asp?id=13367944
dc.identifier.citation	Geochemistry International, 2001, 39, Suppl. 1, 39
dc.identifier.issn	0016-7029
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/25026
dc.description.abstract	New isotopic-geochemical data were obtained in order to date the distinct evolutionary stages of the Chupa Formation in the Belomorian Mobile Belt. Reference U-Pb and Sm-Nd isotopic data are reported for relict rock volumes, which were the least altered during several migmatization stages. Our results indicate that the initial volcanism processes took place at 2850 ± 30 Ma, and high-grade metamorphism is dated at 2820 ± 20 and 2720 ± 20 Ma. The age of the protolith of the metasediments, determined using the cores of detrital zircon grains on a secondary-ion mass spectrometer, lies within the range of 2900-3000 Ma and is consistent with the whole-rock Sm-Nd age values.
dc.subject	Belomorian Mobile Belt
dc.subject	Chupa Formation
dc.subject	Sm-Nd age
dc.subject	2850 ± 30 Ma
dc.title	NEW ISOTOPIC DATA ON THE PROTOLITH AGE AND EVOLUTIONARY STAGES OF THE CHUPA FORMATION, BELOMORIAN BELT
dc.type	Статья

Files in this item

Files	Size	Format	View
There are no files associated with this item.