Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-28T17:16:43.240Z Has data issue: false hasContentIssue false
  • English
  • Français

The problem of the Precambrian—Cambrian boundary

Published online by Cambridge University Press:  01 May 2009

A. Yu. Rozanov  and
B. S. Sokolov
A. Yu. Rozanov
Affiliation:
Palaeontological Institute of U.S.S.R. Academy of Sciences, Maronovsky per 26, Moscow B-49, U.S.S.R.
B. S. Sokolov
Affiliation:
Palaeontological Institute of U.S.S.R. Academy of Sciences, Maronovsky per 26, Moscow B-49, U.S.S.R.
Get access Rights & Permissions [Opens in a new window]

Extract

In the last few years the problem of the lower boundary of the Cambrian has been dealt with in dozens of works which considered not only the history of the question but all the current material available. It is a subject discussed at many national and international symposia. Although great progress has been achieved in drawing together the points of view on the position of the boundary (compare the results of the symposia held in Paris in 1958 with that in 1974), the range of different opinions still remains wide, particularly with regard to the zonal scales (for example, in Siberia, from the base of the Nemakit–Daldyn horizon up to the base of the beds with Fallotaspis). First, therefore, we give consideration to those questions which often constitute a stumbling block. It seems necessary to make a reservation that some of the difficulties arising may undoubtedly be referred to as purely psychological.

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 1 , January 1980 , pp. 23 - 27
Copyright
Copyright © Cambridge University Press 1980

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cowie, J. W. & Rozanov, A. Yu. 1973. The international working group's account of a symposium on the problem of the Precambrian–Cambrian boundary. [In Russian.] Izv. Acad. Sci., Geol. Series, no. 12, pp. 72–82.Google Scholar
Khomentovsky, V. V. 1976. Vendian. [In Russian.] ‘Nauka’, Novosibirsk, pp. 1–211.Google Scholar
Missarzhevsky, V. V. 1973. Conodont-like organisms from boundary layers of Cambrian and Precambrian in the Siberian platform and Kazakhstan, pp. 53–7. [In Russian.] In Problems of Paleontology and Biostratigraphy of the Lower Cambrian in Siberia and Far East. ‘Nauka’, Novosibirsk.Google Scholar
Rozanov, A. Yu. 1976. The boundary of Cambrian and Precambrian. [In Russian.] pp. 31–53. In The Boundaries of Geological Systems: V. V. Menner Anniversary Volume. ‘Nauka’, Moscow.Google Scholar
Rozanov, A. Yu. & Missarzhevsky, V. V. 1966. Biostratigraphy and fauna of the Lower Cambrian horizons. [In Russian.] Akad. Nauk. USSR., Trans. 148, 1–126.Google Scholar
Rozanov, A. Yu., Missarzhevsky, V. V. et al. 1969. The Tommotian stage and the problem of the Cambrian lower boundary. [In Russian.] Akad. Nauk. USSR., Trans. 206, 1–38.Google Scholar
Savitsky, V. E. et al. 1972. A key section of the Cambrian in the Khorbusuonska facial region pp. 53–60. [In Russian.] Materials on the stratigraphy and paleontology of Siberia, in ‘Nauka’ Novosibirsk.Google Scholar
Savitsky, V. E. 1975. The problem of the Cambrian lower boundary in the Siberian platform and the Nemakit–Daldyn horizon. [In Russian.] In Analogues of the Vendian complex in Siberia, pp. 43–61. ‘Nauka’.Google Scholar
Sokolov, B. S. 1974. A problem of the Cambrian and Precambrian boundary. Geol. & Geophys. no. 2, pp. 3–29, 150.Google Scholar
Sokolov, B. S. 1975. The organic world of the Earth on the way to Phanerozoic differentiation. Vestnik Acad. Sci. USSR., no. 1, pp. 126–143.Google Scholar
Zhuravleva, I. T. 1975. Comparative paleontological characteristics of the Nemakit–Daldyn horizon and its possible analogues on the Siberian platform. [In Russian.] In Analogues of the Vendian Complex in Siberia, pp. 63–100. ‘Nauka’, Moscow.Google Scholar