Luther — Economic; Geology oe Onondaga County. 



283 



larger portion, though quite hard, is a lumpy, rubbly mixture of limestone 

 and a small amount of clayey matter, which breaks easily w ith a very irregular 

 vertical fracture, and on exposure is inclined to crumble. At most exposures 

 the upper and lower layers are shaly. It is exposed on the hillside west of 

 the Tully lakes, where it forms a sharply defined terrace, which gradually 

 rises toward the north into a bold escarpment nearly 1 00 feet high. It has 



Figubk 9 The Tully limestone section at Chit's quarry, Tally, N. Y, 



been quarried for building stone and burned into lime at this place. At 

 Carr's quarry, the upper shaly part is covered : the thickness exposed is 

 twenty-three feet, four inches. Barrett's quarry near by is not now operated. 

 The Solvay Process Co. quarried in this ledge for stone used in building the 

 dam and gateways at the foot of Crooked lake. Ousby's quarry, one-half 

 mile east of Tully village, is not operated, and but a part of the limestone is 

 exposed. 



