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 BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 33. pp. 411-490 July 3, 1922 



OLD AND NEW STANDAEDS OF PLEISTOCENE DIVISION IN 

 KELATION TO THE PEEHISTOEY OF MAN IN EUEOPE 1 



BY HENRY FAIRFIELD OSBORN AND CHESTER A. REEDS 



(Presented before the Society December SO, 1921 2 ) 



CONTENTS 



Page 



I. Old and new standards of Pleistocene division 413 



Introduction 413 



1. Glacial correlations of Geikie, Penck and Bruckner, and 



Deperet 414 



2. Peri-Alpine time standards of Penck and Bruckner as inter- 



preted by Deperet 415 



Adoption of theory of four glacial advances 415 



Terraces 417 



Postglacial Period : 417 



Fourth Glacial Period (IV) 418 



Third Glacial Period (III ) 418 



Second Glacial Period (II ) 418 



First or most ancient Glacial Period ( I ) 419 



Conclusion 419 



3. Leverett's comparison of North American and European glacial 



deposits 419 



4. Correlation of British and North European Quaternary de- 



posits of Brooks 421 



5. New chronologic divisions proposed by Deperet 422 



Review and summary of Deperet's proposed chronologic 



subdivision of the Quaternary 422 



Marine Quaternary of the French and English Atlantic 



coasts 425 



Land connections across the British Channel 426 



Coordination 426 



Relation of terraces to moraines 429 



Synchronism of Alpine and Scandinavian advances.... 430 



1 Manuscript received by the Secretary of the Society May 5, 1922. 



2 This paper was presented before the Society in abstract by the junior author, Dr. 

 C. A. Reeds. 



The manuscript and illustrations were completed April 15, 1922. The manuscript 

 was revised by Frank Leverett (geology) and N. C. Nelson (archeology). Critic. il notes 

 by American geologists were added as an appendix, to April 15, 1922. 



XXVIII — Bull. Geol. Soc. Am., Vol. 33, 1921 (411) 



