BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 33, pp. 571-586 September 30, 1922 



TKENTON OF CENTKAL TENNESSEE AND KENTUCKY 1 



BY PEECY E. RAYMOND 



(Presented before the Society December 28, 1921) 



CONTENTS 



Page 



Introduction 571 



The section in Kentucky , 571 



Correlation 573 



The section in central Tennessee 574 



The section at Nashville 575 



Correlation with Kentucky 578 



The Cynthiana, Catheys, and Leipers 579 



Summary , 583 



Correlation table 585 



Introduction 



The correlation of the Trenton strata of the central portions of the 

 States of Tennessee and Kentucky with the deposits of the same age in 

 other regions has been accomplished in a general way, but there is con- 

 siderable difference of opinion as to the equivalence of the subdivisions. 

 Through the aid of a grant from the income of the Shaler Memorial fund 

 at Harvard University, I was able to spend two weeks on this problem, 

 and as a result have come to look upon it in a way somewhat at variance 

 from any solution I have seen in print and also from my own precon- 

 ceptions, obtained from the study of the literature. 



I am greatly indebted to Mr. Wilbur A. Nelson, the State Geologist, 

 for much assistance in Tennessee, and to Prof. Arthur M. Miller for 

 similar courtesies in Kentucky. 



The Section in Kentucky 



The work of Professors A. M. Miller and August F. Foerste in the 

 "Blue Grass" region of Kentucky has amply elucidated the stratigraphy 

 and paleontology of the Ordovician formations of that area. An idea of 



1 Manuscript received by the Secretary of the Society January 31, 1922. 



XXXVIII — Bull. Geol. Soc. Am.., Vol. 33, 1921 (571) 



