THE GEOLOGY OF THE SYRACUSE QUADRANGLE 39 



beds. While the rocks in most places appear to the eye to be nearly 

 horizontal, if one follows a stratum a short distance north or south, 

 it will be seen to have a marked dip to the south. Hence as one 

 travels north across the area he passes over the outcropping edges 

 of successively older rocks which dip underneath all the newer 

 ones to the south. 



In a few places the strata are rather sharply folded and in sev- 

 eral places fractured and faulted. The most marked disturbances 

 of the strata follow a nearly east and west direction near the north 

 edge of the plateau and nearly parallel with the edge. The line of 

 disturbance is not a straight one nor is it known to be continuous. 

 It is probably not. The most easterly point at which this disturbance 

 has been observed is near the Seneca turnpike between Jamesville 

 and Manlius near Fillmores Corners. In the channel of a small brook 

 south of the turnpike the Onondaga limestone is bent in a monoclinal 

 fold almost at right angles, as shown in the accompanying view 

 (plate 8). The continuation of the fold eastward is shown in the 

 next ravine and it appears again on the roadside a quarter of a mile 

 west in a cutting in the Marcellus shale. 



The disturbance is shown by several thrust faults at Fiddler's 

 Green. There are two faults with the overthrust to the north in 

 the gorge below the falls and two others in the cutting made for the 

 trolley line at the north end of the gorge. The displacement varies 

 from a few inches to about 4 feet. (Plates 9 and 10.) 



At Russell's quarry 4 miles west of Fiddler's Green at the south- 

 ern edge of the Syracuse quadrangle and the north margin of the 

 Tully quadrangle, there is a thrust fault in which the Manlius lime- 

 stone is thrust northward over the Onondaga and Oriskany. The 

 vertical displacement is 42 feet. At the south end of the quarry 

 there is a sharp monoclinal fold to the south in the Manlius lime- 

 stone. Half of a mile north of Russell's quarry there arc several 

 small thrust faults in the Fiddler's Green limestone in the railway 

 cut. 



There are some horizontal faults in the Onondaga limestone at 

 the quarries on the Indian reservation 3 miles south of Russell's 

 quarry. In an abandoned limestone quarry on the hillside southwest 

 of Elmwood the rocks are bent and fractured in a somewhat complex 

 manner. 



In Maylie's quarry, a mile southeast of Marcellus on the Skane- 

 ateles quadrangle, there is a thrust fault with a vertical displacement 

 of 3 feet. 



