Palaeozoic formations in the light of the pulsation theory

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• 副题名：Correlation charts 6 p
• 主题词：Geology ; Stratigraphic ; Paleozoic
• 责任者：Grabau ; A. W.
• 责任方式：Written
• 出版者：The National University of Peking
• 出版年：1937
• 出版地：Beijing
• 出版日期：1937/1/1 0:00:00
• 分类号：513
• 语言：English

摘要

The present volume concludes the survey of the formations here classed as Cambrovician, i. e., the, Upper Cambrian, Trema-docian and Lower Ordovician(Canadian and Arenigian of the older classification). Whether these will continue to be re-garded as a unit Pulsation System or eventually will have to, be divided into two: Ozarkian and Canadian, will depend on the result of further investigation.