586 NEW YOEK STATE MUSEUM 



not extending more than 4 feet above tide, and overlain 

 an unstratified layer 5 feet thick, of coarse sand and cobblestones, 

 mostly gneiss. 



From Stormking station to Dutchess Junction there is a stretch 

 of terrace, which ext,ends back to the foot of Breakneck and Tish- 

 kill mountains. The maximum hight of it is 210 feet. Various 

 firms are digging clay in the terrace escarpment the greater part 

 of its length. A well of 65 feet sunk at Aldridge's yard from 

 tide level still showed clay, and adding to this 65 feet of clay above 

 the river level gives us a thickness of 130 feet at this point. The 

 character and thickness of the overlying material varies somewhat. 

 To the rear of Timoney's yard some YOO feet, the terrace has been 

 excavated to a depth of 30 feet, exposing a mass of coarse sand, 

 gravel and cobblestones, mostly granites, gneisses and schists. One 

 portion of it is stratified, and, at the base of the excavation at one 

 point yellow clay has been found. At Timoney's yard there is 1 

 or 2 feet of loam overlying the clay and a growth of brush 

 covers the terrace. At Van Buren's yard the upper layers of clay 

 alternate with layers of sand; the upper 6 feet of the terrace at 

 this point is gravel, the pebbles of it being mostly granite and 

 gneisses. At Aldridge's yard the clay is covered by 6 to 8 feet 

 of unstratified gravel and sand, while at another spot on top of 

 this bank is 12 or 15 feet of fine yellow sand, which shows no 

 stratification. The upper layers of Barnacue & Dow's clay are 

 like those at Van Buren's, but covered by 4 feet of sand and over 

 this in places 6 to 8 feet of coarse gravel. ISTothing is known of 

 the underlying material at these yards. 



The whole of Denning's point is covered with a fine stratified 

 yellowish sand. The clay, which lies at the base of the point, 

 has a thin covering of loam, and the upper layers are somewhat 

 wrinkled. 



There is another stretch of terrace similar to that below 

 Dutchess Junction and of the same hight, extending from one 

 half mile above Fishkill to Low point. At most places the clay 

 is covered by a few feet of loamy soil. Several boulders have 

 been found in the clay at Brockway's yard. Several feet of loam 



