The Upper Neoproterozoic glacial complex in central areas of the Siberian platform

被引：9

作者：

Kochnev, B. B. ^{[1
,2
]}

Pokrovskii, B. G. ^{[3
]}

Proshenkin, A. I. ^{[4
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Trofimuk Inst Petr Geol & Geophys, Novosibirsk, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Inst Geol, Moscow V71, Russia

[4] Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Novosibirsk, Russia

来源：

DOKLADY EARTH SCIENCES | 2015年 / 464卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Neoproterozoic; Siberian platform; glaciation; diamictites; cap carbonates;

D O I：

10.1134/S1028334X15100049

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A stratum of glacial diamictites with thickness of up to 160 m at the basement of the sedimentary cover, overlain by a series of cap carbonates up to 40 m thick is described for several boreholes in the central regions of the Siberian platform. The isotope composition of carbon in carbonates is identical to the Ediacaran cap carbonates from the Patom upland. The series of detrital zircons from diamictites (60 grains) contains three young grains aged 740-690 Ma, which restricts the time of formation of the glacial deposits to the late Neoproterozoic. Thus, the glaciations that were synchronous to the Stert and/or Marino glacial stages on the Siberian platform had a cap character.

引用

页码：1001 / 1004

页数：4

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