322 



Report of the State Geologist: 



the hillside, about half a mile farther east, Between here and West Falls 

 there are no sandstones except a few thin flags among the shales. At the 

 latter place there is a stratum about six feet thick, containing layers like 

 those at Griffins Mills. From here to East Concord, all the rock in sight 

 consists of shales and thin argillaceous flags. 



A mile northwest of Springville, on the farm of Mr. F. A. Clark, is a 

 quarry containing a six-foot layer of a grey siliceous sandstone, unlike any 

 seen elsewhere in the county. In this stone I found several fossils, among 

 which Professor J. M. Clarke recognized Chonetes sdPula, Productella speciosa, 

 Oiiliotlietes CJiemu lujensis (small variety), and a small Spirifer of the type of 

 8. mucronatus. These, he says, are representatives of the Ithaca fauna, and 

 not members of the normal Portage fauna. In the drift near by were 

 fragments of a small branching coral which may have had its origin in 

 this vicinity. 



On the opposite side of the road, the same stratum of stone is worked in 

 a quarry owned by Mrs. B. Wheeler. At Pike hill and Townsend hill, three 

 miles southwest of Boston Corners, are quarries of heavy sandstone, which are 

 described by Mr. Albert Pike, a former owner, as "grey sandstone," and may 

 belong to the same horizon. Owing to the approach of winter I was not able 

 to visit these quarries. In the vicinity of Boston and Boston Centre, the 

 lock is mostly shale with no thick sandstones ; but there is a quarry on the 

 Zeller farm, four miles south of Boston Centre. At the viaduct over Catta- 

 raugus creek, near Springville, the deep gorge of the river is cut through 

 olive shales containing very little arenaceous matter. 



From Shirley, near North Collins, to Collins, the argillaceous sandstones 

 occur, being quarried on the farm of Daniel Sherman, two miles north-east of 

 Collins. They appear to belong to the lower sandstones of the group. At 

 Zoar, the Cattaraugus creek has cut a gorge through the Portage, exposing 

 two strata of sandstone. The upper, near the top of the bank, is twenty to 

 thirty feet thick and separated from a lower fifteen-foot stratum by about 

 thirty feet of shale. Above Zoar, for five or six miles, the rock along the 

 river is an olive shale with thin arenaceous Layers, but no heavy sandstone. 

 In the southern part of the county, a fucoid resembling the 8pirophyton c(iii<!i- 

 </<illi is very abundant, tine specimens occurring in the gorge at Zoar. 



A few poorly preserved brachiopods were noticed in loose micaceous 

 lock in the lied of n stream near Lawton's. From the appearance of the frag- 

 ment the stone had been washed down from the eastward and possibly may 

 have been derived from adjacent Portage rocks. 



