i68 
E. R. Scheffel 
Alexandria to Newark has a deep filling of glacial debris, which 
as described by Tight^^ shows both Illinoian and Wisconsin char- 
acters. The presence of Illinoian drift east of the divide would 
indicate that if the col was cut glacially, it must have been com- 
pleted during early Pleistocene times. ‘'Spring Valley Stream, 
a tributary to the Raccoon, flowing laterally on the east wall of the 
“Old Valley” west of Flower Pot hill, could not have taken its 
original course^^ unless the divide had been previously removed. 
This again brings up the question of the competency of water 
deprived of its load to cut through such divides in the compara- 
tively short time that may be granted. 
To explain the capture at Granville the glacial theory would 
further require that the slope of the rock floor from Granville west- 
ward would be downward, and that this direction gave way to an 
eastward slope of debris because of the varying deposition of the 
latter. But the rock floor has been found by the drill records to 
slope eastward. This fact alone would seem sufficient to preclude 
any theory of capture due to glacial influences. 
It may also be added that of all the cols noted in Licking county 
by the writer, none open toward the south. Many opportunities 
for the damming of water against east-west divides existed, while 
the direction of ice-movement further favored such phenomena. 
The persistent occurrence of these gaps opening toward the east 
does not seem in harmony with a glacial explanation. 
Competency of Explanation by Diastrophism. That a divide 
formerly passed? north and south through Granville is obvious 
from physiographic evidence. If further evidence in addition to 
what has been given were needed, the Sinnett and Colville wells 
in their order westward may again be cited : In the first there is a 
thickness of the Berea formation of 184 feet, in the second 167 
feet. The Sinnett well is obviously near the valley center and con- 
sequently marks the point of greatest erosion in this immediate 
locality. The Colville well in the wider valley westward shows a 
greater erosion by 17 feet. This difference alone is an indication 
of a former west flowing drainage, assuming that the Berea was 
originally of equal thickness at both places. 
Bull.. Sci. Lab., Denison Univ., vol. viii, pt. ii, p. 37, 1894. 
E. R. SchefFel: Loc. cit., pp. 158-160. 
^^Ibid., p. 165. 
