226 
Harmon A. Nixon and Dexter J. Tight 
drift on its slopes, forms a commodious amphitheater, which is 
somewhat dissected by a large tributary, which joins Moot’s 
Run, from the southwest. The rock on the north bank of the 
stream drops almost to the water’s edge, giving place to drift 
in situ, with a very distinct contact. This drift wall flares to the 
north, its surface rising gradually in the same direction, but not 
reaching a level as high as that of the stream wall on the south. 
The first tributary, south of Parry’s, enters Moot’s Run by 
cutting across a portion of the rock wall on the south side of the 
stream. For over 50 yards up this tributary rock walls confine 
it; at the upper end, these walls are about 160 feet apart. The 
wall on the west side is much lower than that on the east, making 
the tributary appear to enter Moot’s Run on the side rather than 
at the axis of the valley; this lower rock wall, heavily overlaid 
with drift, blends into the drift deposits, rising to the south, which 
form the south side of Moot’s Run Valley. 
As one proceeds up this stream, which has many small tribu- 
taries, he finds glacial drift in situ; how thick this drift is we 
cannot say, in the absence of well records, but as there is drift 
in the bed of the stream at levels lower than the rock at the 
^^bend” in Moot’s Run, a preglacial valley is strongly suggested. 
The direction of flow of this preglacial stream was probably to 
the northwest, joining the Raccoon Valley; this inference is based 
on the following facts: The rock outcrop mentioned above, in the 
first tributary, the shoulder of rock in the opposite bank a little 
farther down stream, and the last outcrop in the north bank of 
Moot’s Run, about 100 yards west of the ^^bend,” where rock 
gives place to glacial drift, are in line; these outcrops probably 
represent portions of the northeast valley wall of this northwest 
flowing stream. The valley of Moot’s Run, west of the last 
outcrop of rock, is cut for some distance in glacial drift, showing 
that here it crosses a buried valley. 
The second tributary, near its junction with Moot’s Run, has 
a north-south course for about one-fourth of a mile; at the point 
where it bears to the west ^^blue clay”^^ appears, showing that the 
old channel, just referred to, bends slightly to the west before 
turning northward to the Raccoon Valley. Proceeding upstream 
Journal of GeoL, vol. xvii, 1909, pp. 473-487. ‘‘Metamorphism of Glacial 
Deposits,” F. Carney. 
