QUARTZYTES AND SANDSTONES. 93 



points. The quarry of Daniel T. Smith is a half a mile north of 

 Piermont and east of the Northern railroad a feAV rods. At this 

 quarry the top dirt is about 10 feet thick. The upper beds are some- 

 what shaly ; then the more solid sandstone comes in thick beds, 

 which alternate irregularly with what are known as " callous veins." 

 Some of the stone has a laminated or reedy structure. The dip is 

 12° west. About 15 feet in thickness in beds is here worked. Lin- 

 tels, sills, and a little building stone are obtained. These quarries 

 formerly furnished much stone for foundations in the vicinity, and 

 also some for buildings. A house near the quarry, built in 1768, 

 shows the durable nature of the stone. The Cornelius house also is 

 Nyack sandstone. 



The quarry of Nelson Puif, in the same range and in the southern 

 part of Nyack, is worked nearly every season for the local market. 

 The top dirt is heavy and the upper beds are shaly. Below, the stone 

 is solid and thick-bedded. 



Haverstraw, Rockland County. — The sandstone quarries at Hav- 

 erstraw are in the north-eastern and northern part of the Torne 

 mountain range. They are worked only at long intervals, and for 

 the local market. The stone is rather coarse-grained, and is dark- red 

 in color. 



The Demarest quarry, one and a half miles south-west of Haver- 

 straw, is the only one which has been worked of late years. 



Note. — For the sandstones of the more recent geological formations see pages 

 22 and 23. 



