FIFTH REPORT OF THE DIRECTOR IQo8 



7 



Central and western New York. Reports completed and 

 awaiting publication cover the areal geology of the following 

 quadrangles : Syracuse, Morrisville, Cazenovia, Auburn-Genoa, 

 Honeoye-Wayland (these to be produced as double sheets) and 

 Phelps. Field work has been completed by Air Luther for the 

 Caledonia quadrangle and progress made on the Batavia and At- 

 tica sheets; by Mr Whitnall on the Chittenango sheet and by Prof. 

 W. J. Miller on the Port Leyden sheet. The report on the Remsen 

 quadrangle has been completed by Professor Miller and is now 

 in press. 



All the foregoing maps, except the last two, are of regions 

 where the rocks are unaltered Paleozoic sediments and the problems 

 involved are those of exact classification and distribution of these 

 deposits. The Remsen region is largely composed of such for- 

 mations but also embraces an area of crystalline rocks, while the 

 Port Leyden area is chiefly covered by crystallines. 



Northern New York. The area of active operation in this re- 

 gion embraced the district west and southwest of the Adirondacks 

 and a portion of the Lake Champlain territory on the east of the 

 mountains. 



In my last report reference was made to the work of Prof. H. P. 

 Cushing upon the Theresa and Alexandria Bay quadrangles. This 

 has been brought to completion and the survey extended to in- 

 clude the Grindstone, Clayton and Cape Vincent quadrangles. 

 With collaboration of Prof. C. II. Smyth jr and Dr Ruedemann the 

 field work for the entire five quadrangles was closed and the re- 

 port on the work is in course of preparation. Dr Ruedemann map- 

 ped the St Vincent and southern half of the Clayton quadrangles 

 and Professor Smyth gave most of his attention to the somewhat 

 complicated crystalline geology of Wellesley island while Profes- 

 sor Cushing mapped the rest of the areas specified. The prob- 

 lems involved in this region are significant and have required cau- 

 tious work both in the sedimentaries and the crystallines. The 

 Paleozoic rocks here present members not elsewhere represented 

 in New York and the actual relations of these sedimentary for- 

 mations to those on the east and southeast of the Adirondack area 

 are not as yet entirely clear. Much assistance in this work was 

 derived from consultation with Dr II. M. Ami of the Geological 

 Survey of Canada and E. O. Ulrich of the United States Geologi- 

 cal Survey, both of whom spent some time in this field. 



The chief purpose in extending the area of these operations was 

 to determine with accuracy the distribution and magnitude of the 



