Main stages of tectonomagmatic activity of the Tuva–Mongolian microcontinent in the Precambrian: data on the U–Pb age of zircons


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The U–Pb age of zircons from Ediacaran sandstones of the cover of the Tuva–Mongolian microcontinent and the rocks of its Early Precambrian basement (Gargan block) was analyzed by the LA–ICP–MS method. The major stages of tectonomagmatic activity of this block include the Neoarchean, Paleoproterozoic (no younger than 2 Ga), and Neoproterozoic. Comparison of the age of zircons from Ediacaran terrigenous rocks of the Tuva–Mongolian microcontinent and sandstones of the reference sections of the Ediacaran shelf of the Siberian platform undeniably indicates their independent accumulation.

作者简介

E. Letnikova

Sobolev Institute of Geology and Mineralogy, Siberian Branch

编辑信件的主要联系方式.
Email: leto-y@mail.ru
俄罗斯联邦, Novosibirsk

S. Shkolnik

Institute of the Earth’s Crust, Siberian Branch

Email: leto-y@mail.ru
俄罗斯联邦, Irkutsk

F. Letnikov

Institute of the Earth’s Crust, Siberian Branch

Email: leto-y@mail.ru
俄罗斯联邦, Irkutsk

E. Karakovskii

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: leto-y@mail.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

Yu. Kostitsyn

Vernadsky Institute of Geochemistry and Analytical Chemistry

Email: leto-y@mail.ru
俄罗斯联邦, Moscow

I. Vishnevskaya

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: leto-y@mail.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

L. Reznitskii

Institute of the Earth’s Crust, Siberian Branch

Email: leto-y@mail.ru
俄罗斯联邦, Irkutsk

A. Ivanov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Irkutsk State University

Email: leto-y@mail.ru
俄罗斯联邦, Novosibirsk; Irkutsk

A. Prochenkin

Sobolev Institute of Geology and Mineralogy, Siberian Branch

Email: leto-y@mail.ru
俄罗斯联邦, Novosibirsk

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