﻿NEW YORK STATE MUSEUM 



AlBion 



Lockport 



Saratoga 



Attica 



Medina 



Schuylerville 



Broadalbin 



Mt Marcy 



Stamford 



Depew 



North Creek 



Tarrytown 

 Utica 



Central and western New York. In western New York Mr 

 Luther has been engaged in the resurvey of the Erie and Chautauqua 

 county quadrangles, viz, Eden, Angola, Cherry Creek, Dunkirk and 

 Westfield, to bring the detailed subdivision of the various forma- 

 tions into correspondence with that of the maps already published. 

 The field work on these areas is regarded as practically complete 

 and the maps are now being prepared for publication. As noted 

 last year, work has also been in progress on the Batavia, Attica, 

 Depew, Albion and Medina quadrangles. 



On the Utica quadrangle the work was a completion of that begun 

 the previous summer; the mapping of those parts of the quadrangle 

 then left uncompleted, elaborating the details of those parts covered 

 during the former season, and in carefully collecting the fauna of 

 the region, especially that of the Lowville, Black River and Trenton 

 limestones along the West Canada creek. Within the quadrangle 

 there outcrop representatives of all formations of the Lower and 

 Upper Siluric systems with the exception of the Chazy. Thus 

 the Little Falls, Lowville, Black River, Trenton, Utica, Lorraine, 

 Oneida-Medina, Clinton, Salina and Manlius are represented. 

 As the dip is southwest the lower formations outcrop only in 

 the northeastern corner of the area, while the uppermost formations 

 are found only in the southwestern portion of the region. In 

 many sections the glacial deposits are heavy and interfere greatly in 

 working out the contacts. 



The extreme northeastern section, being all that part on the 

 quadrangle northeast of the West Canada creek, is covered with 

 sand terraces of sufficient thickness to conceal all the bedrock of 

 the region, except for outcrops of the Little Falls dolomite along- 

 Cold brook south of the village of the same name, and a few other 

 outcrops on Buck hill, directly north. The upper 300 feet of this 

 hill is Trenton limestone with the Black River and Lowville lime- 

 stones occurring between it and the Little Falls dolomite. A mile 

 and a half below the village of Poland, the Little Falls dolomite 

 occurs, but a short distance farther south West Canada creek is 

 underlain by the Lowville limestone, which continues nearly to 

 Newport where the Little Falls again appears at the surface, due 



