Education Department Bulletin 



Published fortnightly by the University of the State of New York 



Entered as second-class matter June 34, 1908, at the Post Office at Albany, N, Y., under 



the act of July 16, 1894 



No. 468 ALBANY, N. Y. April i, 1910 



New York State Museum 



John M. Clarke, Director 



Museum Bulletin 138 



GEOLOGY OF THE ELIZABETHTOWN AND 

 PORT HENRY QUADRANGLES 



BY 



JAMES F. KEMP Sc. D. 



AND 



RUDOLF RUEDEMANN Ph. D. 



John M. Clarke, State Geologist 



Sir: In the preparation of the present bulletin the work on the 

 crystalline rocks has been done by the senior author and that upon 

 the Paleozoic strata by the junior author. Geological field work in 

 this area was begun by the senior author under the auspices of the 

 State Museum and as a result thereof a report was rendered on 

 Geology of Moriah and Westport Townships, Essex county 

 published in 1895 as Bulletin 14. In this work W. D. Matthew- 

 was assistant. In 1894 and 1895 field work was continued in other 

 towns of Essex county under the direction of the State Geologist, 

 with W. D. Matthew and Heinrich Ries as assistants. These re- 

 sults were published in the annual report of the State Geologist 

 for 1893, pages 433-72 and for 1895, pages 575-614. In 1896 the 

 United States Geological Survey authorized the senior author to 

 prepare a folio to embrace the four quadrangles Elizabethtown, 

 Ausable, Mount Marcy and Lake Placid, all to be reduced to one 

 map on the scale of i : 125,000. In the execution oi this work the 

 Elizabethtown quadrangle was covered during 1896 and 1897 with 

 the aid of D. H. Newland, J. D. Irving and Charles Fulton. As 

 a consequence of the arrangement perfected by the New York 

 State Geologist and the Director of the United States Geological 

 Survey these results have been transmitted to the former publica- 

 tion. Since the dates referred to, however, the work has been re- 



