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.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.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.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 |