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MERWIN: SHORE-LINES. 325 
terraces in that valley Hitchcock! has correlated with stages of a glacial 
lake which he has called Glacial Lake Memphremagog. 
If the amount of tilting has been correctly measured the lake at 
Hardwick at the 1055-foot level could not have drained into the 
Connecticut River, for the lowest point between the basins of the 
Connecticut River and the St. Lawrence River was then higher than 
this lake. (The point is near Williamstown at 890 feet). The drain- 
age was probably southwestward along the ice-front. 
A few miles further down the river, one mile west of Wolcott, an ex- 
posed section of a delta shows fore-set beds dipping south, and top-set 
beds of thin lenses of gravel. At the level of the top of this section, 
800 feet in elevation, there is a delta-like deposit at the cemetery 
northeast of the village, and broad terraces at the mouth of Wild 
Brook, 2 miles west of the village. The water-body standing at this 
level could not have drained northward into Lake Memphremagog. 
Because it was confined to the Lamoille valley it seems appropriate 
to call this body of water Lake Lamoille. 
Still further down the river near Morrisville, the Lamoille valley 
widens broadly where it is met on the south by the Joe’s Brook valley. 
Sandy plains with small dunes and gravelly ridges cover an area of 
several square miles. On the hill slopes between Joe’s Brook and 
the Lamoille River irregular terrace-like forms cross the Elmore road 
at an elevation of 950 feet and lower. At 790 feet, 760 feet, and 725 
feet above the sea, parallel gravelly ridges from 1 to 3 feet high, each 
below a terrace cliff, and separated from it by a slight depression, 
border the valley southeast of Morrisville. The terrace cliffs face the 
valley. The ridge below the cliff at the altitude of 760 feet has an 
exposed cross-section showing the gravel of which it is composed to 
be distinetly cross-bedded, the dip of the beds being toward the 
adjacent terrace cliff. The topography and structure of this gravel 
ridge, and the topography of the adjacent country all support the 
idea that the terrace cliffs here are wave-cut, and that the low ridges 
below them are barrier beaches. Moreover, a water-level at about 
the altitude of the highest of these terraces is necessary to account 
for the clays, and the northerly drainage, of the valley of Joe’s Brook. 
The larger part of the floor of the valley about Morrisville is very 
evenly filled to an altitude of about 660 feet.” The river is deeply 
1C. H. Hitchcock, High level gravels in New England. Bull. Geol. Soc. Amer., 
1894, vol. 6, p. 460. 
2 Large masses of highly contorted clays may be seen in the eastern part of the village 
at about this elevation. 
