Composition and Age of Rocks of the Provenance Areas for the Lower–Middle Cambrian (?) Terrigenous Sediments of the Ernichnaya Formation of the Argun Massif, Eastern Part of the Central Asian Foldbelt

Smirnova, Y.N.; Kurilenkov, A.V.; Khubanov, V.B.

Авторы: Smirnova Yu N., Kurilenkov A.V., Khubanov V.B.
Журнал: Stratigraphy and Geological Correlation
Том: 31
Номер: 5
Год издания: 2023
Издательство: Pleiades Publishing, Inc.
Местоположение издательства: New York, USA
Первая страница: 443
Последняя страница: 458
Оригинальные версии: Состав и возраст пород областей сноса для нижне-среднекембрийских (?) терригенных отложений ерниченской толщи Аргунского массива, восточная часть Центрально-Азиатского складчатого пояса
DOI: 10.1134/s0869593823050076
Аннотация: The results of mineralogical and geochemical studies of sandstones and siltstones of the Ernichnaya Formation of the Argun Series of the Argun continental massif and the U–Pb (LA-ICP-MS) age of their detrital zircon are presented. It is found that the youngest group of detrital zircon has the age of 549– 570 Ma with a maximum on the probability density curve of zircon ages of 566 Ma. This suggests that the lower age boundary of their accumulation corresponds to the Ediacaran–Paleozoic boundary. According to the results of U–Pb (LA-ICP-MS) dating of zircon grains, the dominant zircons in sandstones of the sequence have Neo- and Paleoproterozoic ages. These zircons were probably sourced from the Neo- and Paleoproterozoic igneous and metamorphic rocks widely abundant within the Argun continental massif. The geochemical features of terrigenous rocks of the sequence together with the presence of poorly sorted and weakly rounded rock clasts in the studied samples, as well as the presence of interlayers of gravelites in struc- ture of the sequence, indicate their accumulation in a subduction-related setting.
Добавил в систему: Хубанов Валентин Борисович

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Composition and Age of Rocks of the Provenance Areas for the Lower–Middle Cambrian (?) Terrigenous Sediments of the Ernichnaya Formation of the Argun Massif, Eastern Part of the Central Asian Foldbeltстатья Исследовательская статья

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