DESCRirTIVE NOTES OF QUARRY DISTRICTS AND QUARRIES 267 



Oneonta sandstone, which is the equivalent of the I^ortage 

 group, may form a part of the belt near the foot of the 

 mountains, but it is impossible to define its limits and to 

 designate the quarries in it. The quarries at Roxbury and 

 Margaretville and their vicinity, are in the Catskill forma- 

 tion. And the openings along the Monticello railroad, in 

 Sullivan county, are probably in the same horizon. The 

 main blue-stone belt, where it has been so extensively 

 opened, as in the towns of Saugerties, Kingston and Hur- 

 ley, is of the Hamilton period. 



'' Beginning at the north-east, there are small quarries at 

 Reidsville and Dormansville, seven miles west of the Hudson 

 river, and in Albany county. They have furnished a great 

 deal of stone for flagging in the city of Albany. The stone 

 of these quarries is gray in color and rather coarser-grained 

 than the typical blue-stone of the Hudson river quarries. 



'' In Greene county there are several small quarries near 

 Leeds, which are worked mainly for the Catskill market. 

 In the vicinity of Cairo stone is quarried at several places, 

 and shipped by rail. On the line of the Stony Clove and 

 Catskill Mountain railroad, and along the Kaaterskill rail- 

 road, quarries have been opened, from the mountain houses 

 southwest to Phoenicia." 



Ulster county is the largest producer of blue-stone, and 

 its quarry districts are the following : Quarryville, West 

 Saugerties and High Woods, in the town of Saugerties; 

 Dutch Settlement, Hallihan Hill, Jockey Hill, Dutch Hill 

 and Stony Hollow, in the town of Kingston ; Bristol Hill, 

 Morgan Hill, Steenykill and West Hurley, in the town of 

 Hurley ; Marbletown, Woodstock, Broadhead's Bridge, 

 Shokan, Boiceville, Phoenicia, Woodland Hollow, Fox Hol- 

 low, Shandaken, Pine Hill, and Rochester and Wawarsing 

 quarries, in the valley of Rondout creek and its tributaries. 



There is much variation in the several quarries of these 

 localities, both in the nature and thickness of the overlying 

 earth or stripping, and in the number and thickness of the 



