46 NEW YORK STATE MUSEUM 



height delta appears at and south of EUzabethtown, 8 miles west 

 of Westport. The village is built on the delta, with altitude 600 

 to 640 feet, and lies just above the isobase of 600 feet. This delta 

 was the product of several streams uniting at this place. The 

 superior altitude of the delta is due to the aggradation in a narrow 

 valley far from the base level. The " Pleasant valley " section 

 is graded to a lower level, 560 feet. This locality was made the 

 subject of a paper by Ries (74). 



Willshoro qiiadrangle. The profile levels along the west side of 

 the lake rise from about 615 to 660 feet. 



The lower plains of the Bouquet delta are conspicuous on the 

 map, north and south of Willsboro. The coarser detritus of the 

 river was dropped at the junction with the high-level waters far 

 inland, that oif the south branch at Elizabethtown, as already noted, 

 and that of th^ north branch on the Ausable quadrangle 3 miles 

 north of Towers Forge. 



The hill 2 miles south of Willsboro carries elegant inferior bars 

 on the summit and east face, from 300 feet down. Northwest of 

 East Bouquet mountain clear evidence of standing water was seen 

 along two roads up to a height of 620 ieet. The theoretic height 

 is about 625 feet. Examination of the area will locate many evi- 

 dences of summit wave action. 



Plattsburg and Dannemora quadrangles. On this area the sum- 

 mit shore features lie inland, with handsome display. The Platts- 

 burg sheet shows the low ground built by the Ausable, Little 

 Ausable, Salmon and Saranac rivers. But the south edge of this 

 sheet covers the north part of the Trembleau mountain, which 

 carries on its northwest slope a fine series of gravel bars below 

 the summit of the marine flood. Woodworth maps these bars in 

 his plate 21. 



The Trembleau gravel bars lie one and one-half miles south- 

 west oif Port Kent, and 2 miles east of Keeseville. An east and 

 west road crosses the plateau which carries the higher good bars. 

 The highest bars, at about 590 feet, lie in weak form close to the 

 steep northwest face of the mountain. This is 70 feet short of 

 the summit plane, but the steep rock face shows its rinsing. On 

 the road bars appear at about 575, 560, 545 and 530 feet. The 

 northwest end of the hill is encircled by a series of bars to. a lower 

 level. The lowest feature is a clifT toward the railroad and near 

 the border of the silt plain. Woodworth indicates shore features 

 on the north and east faces of the mountain. 



A mile southeast of Keeseville, on the northwest and north slope 



