The First Results of U–Pb Dating of Detrital Zircons from the Oligocene of the Southeastern Part of the Voronezh Anteclise and Their Importance for Paleogeography

The first results of U-Pb LA-SF-ICP-MS-dating of detrital zircons from terrigenous deposits of the Miniseishor suite of the Nyarovei series of the Harbei anticlinorium of the Polar Urals are presented. The series has a presumably Middle Riphean age and lies at the base of the section of the Polar Ural Upper Precambrian. The data obtained give grounds to limit the lower age interval for the formation of sediments of the Minisejshor suite abroad 660 million years ago. Allotment the Nyarovei series as a Middle Riphean straton is erroneous. Formation of the whole cut the Nyarovei series occurred in a relatively narrow age range at the end of the late Riphean. The dominant role in the formation of deposits of the entire series belonged to the products of erosion close arrays of deeply metamorphosed rocks.

Download Full-text

First Results of Dating Detrital Zircons from Late Precambrian Coarse Clastic Sequences of Ulutau Massif, Central Kazakhstan

Doklady Earth Sciences ◽

10.1134/s1028334x18110028 ◽

2018 ◽

Vol 483 (1) ◽

pp. 1384-1387 ◽

Cited By ~ 1

Author(s):

N. A. Kanygina ◽

E. F. Letnikova ◽

K. E. Degtyarev ◽

A. A. Tretyakov ◽

F. I. Zhimulev ◽

...

Keyword(s):

Detrital Zircons ◽

Massif Central ◽

Late Precambrian ◽

First Results

Download Full-text

Triassic formations of Mountain ous Crimea: the first resust of U–Pb dating of detrital zircons

Moscow University Bulletin. Series 4. Geology ◽

10.33623/0579-9406-2020-2-18-33 ◽

2020 ◽

pp. 18-33

Author(s):

A. M. Nikishin ◽

T. V. Romanyuk ◽

D. V. Moskovskiy ◽

N. B. Kuznetsov ◽

A. A. Kolesnikova ◽

...

Keyword(s):

Sedimentary Basin ◽

Upper Triassic ◽

Detrital Zircons ◽

Ukrainian Shield ◽

Primary Sources ◽

Two Samples ◽

Primary Relationships ◽

First Results ◽

Different Parts ◽

Mountainous Crimea

The first results of U-Pb dating of detrital zircons (dZr) from two samples characterizing the Taurica and Eski-Orda Groups of the Cimmerian structural complex of the Mountainous Crimea are presented. The strong similarity of the sets of ages of dZr from the Lower Taurica Formation of the Taurica Group and the Salgir strata of the Eski-Orda Group confirms the facial character of the primary relationships of these Groups. The studied Upper Triassic sandstones had a common feeding province and were formed, most likely, in different parts of the same sedimentary basin. It is most likely that this sedimentary basin was part of a continental margin of Baltica. The presence in samples of a significant number of dZr with very ancient ages >3.0 Ga (including 3 the oldest dZr grains with ages of ~3.9 Ga) makes the crystalline complexes represented in the present-day structure of the Ukrainian Shield as the very possible primary sources of these zircons. Crystalline complexes with such ancient ages are extremely rare over the world, but are widely represented in the Podolian and Cis-Azov blocks of the Ukrainian shield.

Download Full-text