124 Bulletin of Laboratories of Denisoji University [Voi.xiii 



Rocky Fork, crossing the township twice, has already been 

 alluded to. A tributary stream comes from the south joining 

 the major valley near Perryton. 



These valleys are not uniformly concordant, a condition 

 discussed under Drainage. We do not know the exact depth 

 to which they have been incised. An altitude of about 400 

 feet was measured between the greatest elevation, Claggett's 

 Hill, and the lowest flood-plain, the point where the Wakatom- 

 aka leaves the township. But the present vertical range in al- 

 titude falls much short of representing the maximum work done 

 by erosional factors. We have no borings giving complete 

 cross-sections of the drainage lines, therefore the exact depth 

 of their aggraded materials cannot be stated. 



Weathering and degradation have proceeded so far that we 

 have no long ridges or divides. Conditions inherent in the 

 stratigraphy, important among which is the variation in rock 

 texture along both vertical and horizontal lines, have aided in 

 accomplishing the topographic features described. 



GLACIATION. 



All evidence found points to the conclusin that ice never 

 moved into this township from the west, north, or east. We 

 find columnar remnants (Fig. 8) of once continuous escarp- 

 ments that could not have withstood the over-riding of ice. 

 Residual soil in place is constant on slopes exposed to ice mov- 

 ing in from any of these directions (Fig. 9). We find no for- 

 eign boulders that could have been brought in by ice, except 

 in southwest corner of the township in the flood-plain material 

 along the Rocky Fork. Furthermore the valley filling of the 

 streams is local. 



In the south central part of the township is glacial-carried 

 deposit ; this accumulation is continuous with the drift about 

 Hanover. Towards its northern margin this drift area is made 

 up of assorted materials as if deposited by water moving rather 

 freely in the direction of Perryton ; in this marginal section we 

 do not find any immediately ice-front drift, or till ; and the drift 

 thickens as we go southward in the direction of Hanover. The 



