5Y8 NEW yoke: state museum 



with, pebbles of shale and quartz. The sand grains are chiefly 

 gronnd-np shale, the rest being silicions and calcareous, with a 

 few grains of feldspar and. garnet. This sand can often be used for 

 tempering, but at Catskill contains too muchi lime for this purpose. 



I have not observed this underlying sand and gravel reaching a 

 greater hight than 90 to 100 feet above sea level. 



From Catskill northward the clay is in most cases covered by 

 but a foot or two of loam, but south of Catskill it is mostly a fine 

 sand. At Catskill a terrace extends back 2 miles and probably 

 more; it is deeply incised by Catskill and Kaaterskill creeks and 

 smaller streams and rocky islands project above its surface at vari- 

 ous points. The terrace can be traced up to Walkill valley to a 

 point s-everal miles south of ISTew Paltz. Along the West Shore 

 railroad track, about 150 feet south of the station, the side of the 

 cutting consists of thin alternating layers of clay and sand 27 feet 

 thick. Above this, in places, is 9 feet of fine, stratified, yellowish 

 sand. The clay extends along the track for about one fourth of a 

 mile till it meets an outcrop of Hudson river sandstone. On the 

 south side of the Catskill mountain railroad, 100 feet from the 

 bridge, is an exposure of sand and gravel, the pebbles being very 

 ooiarse. It is presumably drift material, but the exposure is an 

 isolated one and does not show its relation to other deposits of the 

 vicinity. At Smith's dock, on the land of T. Brousseau near the 

 river, the upper portion of the terrace escarpment consists of fine 

 stratified sand, which has been excavated to a depth of 12 feet with- 

 out finding clay, while farther back from the river the clay extends 

 to within 2 feet of the terrace level. 



The Hudson river shale rises steeply along the water's edge 

 from here down to Maiden, and crops out at numerous points in 

 the terrace escarpment. The clay along here is probably not of 

 great depth. Clay is found in the railroad cutting to the north' 

 of Maiden station, about Y feet above the track Jlevel, and clay is 

 exposed in numerous cuttings of the West Shore railroad, from 

 Maiden to Mt Marion. 



