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Late Precambrian geochronology of the European U.S.S.R.

Published online by Cambridge University Press:  01 May 2009

B. M. Keller  and
A. A. Krasnobaev
B. M. Keller
Affiliation:
Geological Institute of the AN USSR, Pyshevsky pereulok 7, Moscow Zh-17, U.S.S.R.
A. A. Krasnobaev
Affiliation:
Institute of Geology and Geochemistry of the AN USSR, Počtoviy pereulok 7, Sverdlovsk centre, U.S.S.R.
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Abstract

Summary. The available data on radiometric dating of Riphean and Vendian deposits in the European part of the U.S.S.R. enabled us to establish the age of geochronological boundaries. The Riphean lower boundary was adopted as 1650 ± 50 Ma, the Vendian lower boundary as 650 ± 10 Ma, and the Cambrian lower boundary as 590 ± 10 Ma, making the total length of the Riphean about 1000 Ma and that of the Vendian about 60 Ma. This paper suggests a draft of the geochronological scale of the Late Precambrian.

Type
Articles
Information
Geological Magazine , Volume 120 , Issue 4 , July 1983 , pp. 381 - 389
Copyright
Copyright © Cambridge University Press 1983

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