638 



Report of the State Geologist. 



for the section from the level of the West Shore railroad below the quarry 

 to its top. The dip is about sixty degrees west of south and the amount 

 varies from four to eight degrees in the different portions. This quarry was 

 described some ten years ago by Professor Smock.* 



Canajoharie Creek Section. 



The Canajoharie creek flows through the central part of the village, and 

 exposures of the Calciferous sandrock begin along its sides opposite Arkell 

 & Smith's paper bag factory. Along this part of the creek the banks are 

 not steep, but about one-half mile farther up the stream they become steep 

 and in places there are vertical rock cliffs, seventy -five feet or more in height. 

 Near the lower end of this gorge the Calciferous passes beneath the bed 

 of the creek and is succeeded by seventeen feet of thin bedded Trenton 

 limestone, above which is the Utica slate forming the cliffs of the greater 

 part of the glen. In describing this region Mi*. Darton stated that in 

 descending the Mohawk river the thickness of the Trenton limestone 

 gradually decreases until at Canajoharie " the amount is only six feet, 1 ' 

 and further says, " the formation is well exposed on the creek behind 

 Canajoharie."t In the upper part of the gorge the older rocks are covered 

 \>\ a deposit of boulder clay, which in places has a thickness of some 

 seventy-five feet. 



LII B 1 . Fucoidal substage of the Calciferous sandrock from 

 the base of the Trenton to the level of the West Shore railroad. The lowest 

 exposures noted are on the bank of the creek opposite the Arkell & Smith 

 factory above the West Shore railroad bridge, and about on a level with 

 the track. 



B' 2 . Thin-bedded dark blue, very fossiliferous Trenton limestone, ifl et T o 

 separated by shaly partings, with a total thickness varying from sixteen to 

 seventeen feet, as measured on the vertical banks of the creek. The line of 

 division between the Trenton and Calciferous formations in this section is 

 clearly shown, for the upper part of the Calciferous is slightly flexed and 

 upon it the regular layers of the Trenton rest. This shows a slight folding 

 of the Calciferous previous to the deposition of the Trenton and indicates 

 between them a time break of considerable duration which, in northeastern 

 New York, is tilled by the Chazy limestone. Darton gave a picture of the 

 creek bank, showing the contact of the Calciferous and Trenton.J 



* Bnlletin New York State Muslim , No. 3, 1898, pp. 103-110. See ibid.. Vol. 2. No. 10, 1890, p. 245. 

 t Thirteenth Annual Report State Geologist [New Yorkl. 1894. p. 425. 



t Ibid., pi. 5. 



