The First Results of U–Pb LA-SF-ICP-MS Dating of Detrital Zircons from Middle Riphean(?) Terrigenous Deposits of the Polar Urals

This paper reports the first results of U–Pb LA-SF-ICP-MS dating of detrital zircons from terrigenous deposits of the Miniseishor Formation, Nyarovei Group of the Kharbei Anticlinorium, the Polar Urals, presumably of Middle Riphean age, located at the Upper Precambrian Polar Ural section base. The d...

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Bibliographic Details
Published in:Doklady earth sciences 2019-04, Vol.485 (2), p.386-390
Main Authors: Ulyasheva, N. S., Pystina, Yu. I., Pystin, A. M., Grakova, O. V., Khubanov, V. B.
Format: Article
Language:English
Subjects:
Age
Chronology
Dating
Deposits
Earth and Environmental Science
Earth Sciences
Erosion
Geochemistry
Isotopes
Lead
Precambrian
Stratigraphy
Terrigenous sediments
Zirconium
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Summary:This paper reports the first results of U–Pb LA-SF-ICP-MS dating of detrital zircons from terrigenous deposits of the Miniseishor Formation, Nyarovei Group of the Kharbei Anticlinorium, the Polar Urals, presumably of Middle Riphean age, located at the Upper Precambrian Polar Ural section base. The data obtained give grounds for constraining the lower age interval of the Miniseishor deposit to the turn of 600 Ma ago. In addition, these data are indicative of the fact that identification of the Nyarovei Group as a Middle Riphean stratigraphic unit is wrong. The whole Nyarovei section was formed in a relatively narrow age interval at the end of the Late Riphean. Erosion products of the adjacent deeply metamorphosed rocks played a key role in the development of deposits throughout this group.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X19040081