BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 2, pp. 587-606, PL. 23 JULY 8, 1891 



VAKIATIONS IN THE CKETACEOUS AND TERTIARY STRATA 



OF ALABAMA. 



BY DANIEL W. LANGDON, JR., A. M., F. G. S. A. 



(Read before the Sociefy December 30, 1890.) 



CONTENTS. 



Page. 



The General Stratigraphy 587 



Cretaceous Strata 588 



The Tuscaloosa 588 



The Eutaw 590 



The Eotten Limestone 591 



The Kipley 592 



Tertiary Strata V. 594 



Thickness and Divisions 594 



The Midway or Clayton 594 



The Black Bluff 595 



The Naheola 595 



The Nanafalia 596 



The Tuscahoma 596 



The Bashi 596 



The Hatchetigbee 597 



The Buhrstone 597 



The Claiborne 597 



The White Limestone 598 



The Miocene 599 



Kesume 599 



General Section exposed on the Chattahoochee Kiver 600 



Comparative Sections of eastern and v^estern Alabama 605 



Discussion 606 



The General Stratigraphy. 



In the most recent and exhaustive authoritative publication concerning 

 the Cretaceous and Tertiary strata of Alabama, Bulletin number 43 of the 

 United States Geological Survey (1887), Professor Eugene A. Smith, State 

 Gelogist of Alabama, and Lawrence C. Johnson, of the United States Geo- 



LXXXVI— Bull. Geol. Soc. Am., Vol. 2, 1890. (587) 



