Skip to Main Content
Book Chapter

Glacial deposits of the Baykonur Formation, Kazakhstan and Kyrgyzstan

By
Nickolay M. Chumakov
Nickolay M. Chumakov
Search for other works by this author on:
Published:
January 01, 2011

Abstract

The Baykonur Formation extends with some interruptions for over 1700 km along the eastern and northern margins of the Upper Precambrian Syrdarya and Tarim microcontinents. The Baykonur Formation constitutes the upper part of the Ulutau Group, which lies on an erosional surface of granosyenite with a U–Pb age of 720±20 Ma and is overlain by Lower Cambrian vanadium-bearing carbonaceous-siliceous shales. The Baykonur Formation is mostly composed of diamictite with erratic and striated stones, and includes thin-bedded shale beds with lonestones (dropstones) and a ‘cap dolomite’ unit at its top. The lithological composition of this formation implies a glaciomarine origin, while its stratigraphic position suggests a Late Vendian or an Early Cambrian age (the latest Ediacaran or Early Cambrian according to scale of the International Commission on Stratigraphy).

You do not currently have access to this article.

Figures & Tables

Contents

Geological Society, London, Memoirs

The Geological Record of Neoproterozoic Glaciations

Emmanuelle Arnaud
Emmanuelle Arnaud
University of Guelph, Canada
Search for other works by this author on:
Galen P. Halverson
Galen P. Halverson
McGill University, Canada
Search for other works by this author on:
Graham Shields-Zhou
Graham Shields-Zhou
University College London, UK
Search for other works by this author on:
Geological Society of London
Volume
36
ISBN electronic:
9781862394117
Publication date:
January 01, 2011

GeoRef

References

Related

Citing Books via

A comprehensive resource of eBooks for researchers in the Earth Sciences

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal