CLAYS OF NEW YOKE 583 



was observed in a meadow opposite the Roman catKolic cliurcli; 

 it was exposed in digging drainage trenches. JSTear this locality, 

 but a little nearer the river, were found several mastodon bones. 



At Jonespoint there was formerly a small deposit of clay, but it 

 has been entirely worked out. 



Haverstraw has three terraces, viz, at 20', 60 and lOO feet. 

 The clay so far as known is only fonnd underlying the twoi lower 

 ones, the upper one being underlain by drift and delta deposits. 



There is a deposit of clay at Stonypoint forming a portion of the 

 20 foot terrace. The upper layers of clay are in places loamy and 

 ■undulating. Over the clay is a mass of unstratifLed material from 

 2 to 8 feet thick, and the upper surface of the clay is uneven. 

 The overlying unstratified material is a coarse sand full of cobble- 

 stones, gneiss, schist and granite, all of them rounded but not 

 scratched. On the hillside tO' the west of this deposit is a large, 

 isolated boulder of granite. The upper terrace at Stonypoint is 

 about 75 feet higher than the station level; a portion of this terrace 

 remains about one eighth of a mile north of Stonypoint station on 

 the west side of the track. On the west side of the track where it 

 crosses Cedar Pond brook the delta structure is observable in the 

 embankment, the upper portion of which consists of coarse sand, 

 pebbles and cobblestones which are mostly of gneiss. The lower 

 layers exposed at this point are quite argillaceous. A short distance 

 below the West Haverstrav/ station and some 500 feet west of the 

 track, an excavation had been made for tempering material. It 

 exposes a fine yellowish cross-stratified sand overlain by several feet 

 of coarse sand and cobblestones. 



In T. Malley's clay bank along the shore on the north side of 

 Grassy point, the clay is not found above tide level and is 

 overlain by 3 to 4 feet of fine gravel. To the northeast of 

 P. Brophy's yard is the remnant of a terrace. It is composed of 

 obscurely cross-stratified sand and gravel, overlain by a few feet 

 of loamy clay, very thinly stratified and the layers wavy. There 

 is a boulder of norite in this bank; there are also cobblestones of 



