Open AccessTHE FIRST U-PB SHRIMP DATING OF ZIRCONS FROM CAPITANIAN (MIDDLE PERMIAN) DEPOSITS OF THE OMOLON MASSIF (NORTHEAST RUSSIA)
Author(s) -
I.V. Brynko,
G.O. Polzunenkov,
A.S. Biakov,
I.L. Vedernikov
Publication year - 2021
Publication title -
tihookeanskaâ geologiâ
Language(s) - English
Resource type - Journals
ISSN - 0207-4028
DOI - 10.30911/0207-4028-2021-40-1-77-86
Subject(s) - massif , permian , geology , zircon , paleozoic , basement , paleontology , population , stratotype , geochemistry , volcano , shrimp , volcanic rock , structural basin , stage (stratigraphy) , archaeology , geography , demography , sociology , fishery , biology
U-Pb dating of zircons from two samples of stratotype sections of the Gizhiga Formation of the Middle Permian of the Omolon Massif was first performed. Weighted average ages are 266 ± 2 and 265 ± 3 Ma taking into account the error, are consistent with Capitanian age previously established by paleontological determination. The presence of a detrital zircon population made it possible to identify several sources in the Omolon Basin. Pre–permian zircons are associated with erosion of basement deposits of the Omolon Massif, and the Middle Paleozoic volcanic rocks of the Kedon series and Permian population of zircons linked with volcanic activity of the Okhotsk-Taigonos volcanic arc.