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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 24 (1940)

Issue: 2. (February)

First Page: 282

Last Page: 336

Title: Carboniferous-Permian Boundary

Author(s): Raymond C. Moore (2)

Abstract:

Consideration of the requisites of a systemic classification that is practically most useful in all parts of the world emphasizes the importance of substantial agreement among geologists in acceptance of designated major divisions and of the nomenclature applied to these divisions. Likewise, greatest possible uniformity of usage in definition of systemic boundaries is obviously desirable.

The Carboniferous and Permian systems, respectively understood to include post-Devonian pre-Permian and post-Carboniferous pre-Triassic rocks, are considered to be among major divisions that should be recognized generally. Agreement in precise definition of the Carboniferous-Permian boundary, both in the type areas and elsewhere, offers difficulties. The paper here offered undertakes to clarify principles that apply to solution of this boundary problem, considers divergent previous usage and present views, and states conclusions that, it is hoped, will contribute to ultimate general agreement.

The lower boundary of the Permian, as now placed in most sections of North America and western Europe, appears to be stratigraphically below the position of this boundary in the type Russian section. Revision of the Carboniferous-Permian boundary in Russia, as advocated by Ruzencev, Nalivkin, Dunbar, and others, removes evident inconsistencies that otherwise exist, and this change appears to make classification accord best with paleontologic and stratigraphic relationships in different parts of the world. Acceptance of the revision and of the definition of this boundary given in the report of the Permian committee of the American Association of Petroleum Geologists is recommended.

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