64<> 



Report of the State Geologist. 



The dip is 6°, S. 50° W. Mr. Darton, in giving a description of tbe various 

 layers shown in this quarry assigned to them a total thickness of only thirty- 

 four and one half feet which is clearly an underestimate.* The greater part 

 of the Avail of the quarry is perpendicular so that there is no difficulty in 

 measuring it accurately. 



South Side of the Mohawk. 



On the southern side of the Mohawk river, about two miles east of Fort 

 Hunter, are clear exposures of the fucoidal beds of the Calciferous, along the 

 West Shore railroad and in the side of the hill south of the highway. 

 Quarries in this division of the Calciferous are at present worked by the 

 Wemple Brothers. A section in the western part of the quarry is as follows: 



XLIY O 1 . Fine-grained, non-fucoidal layer 



C 2 . Fine grained, dark drab, non-fucoidal layer. Main quarry bed. 



C n . Layer merging into the one above, but with tendency to Fl 

 divide into thin layers. 



C 4 . Mainly in one thick, compact layer, the upper part quar- Ft 1 8 ,1 - = F i? 1 t 

 lied, still greater tendency to split along the middle. Steel-grey color weath- 

 ering to a mottled light grey and buff. 



C h . Three dark grey layers, eight, nine and ten inches below Ft - "'^ fi 

 the top. 



O 6 . Layer not so fucoidal as those above F i C s n 



Feet 

 2 = 2 



Feet 

 2 = 4 



Ft. in. Ft. in. 



= 53 



C. Buff weathered layers with pitted surface ; the fucoidal 



Ft. in. Feet. 

 4 7 = 18 



material conspicuous and in horizontal layers. 



About 700 feet east of the quarries, Utica slate is exposed in the bed 

 of a small brook to the railroad level; and about 100 feet east of the 

 quarries the shale may be seen in the hillside not far above the railroad, the 

 layers being highly inclined to the east. In the railroad cut not far west of 

 this point, the fucoidal rock is shown and a section is as follows : 



XLIV D 1 . Heavy bed with disseminated fucoidal material 3^=3^ 

 separated from layer above by a band of very fucoidal character. 



D~. Layer with several prominent buff bands; one very con- 2 = ee 5^ 

 spicuous about four inches wide. 



D*. Similar to the following (D 4 ) but with greater number of ujftfu 

 streaks. 



//'. Massiv e bed of even weathering limestone with some obscure bk^w:* 

 yellowish streaks when weathered. 



►Thirteenth Annual Keport of thr State Geologist [New York], p. 121. 



