169 
Drainage Changes near Granville , Ohio 
As the slope of the rock bottom of the Raccoon valley from Alex- 
andria towards Newark is now eastward, land-movement can be 
the only remaining explanation for the reversal of drainage west 
of the divide at Granville. The dipping of the strata eastward 
may be even suggestive of tilting in that direction. (It is admitted 
that the A. R. Wright well shows some discrepancy with all but 
the last of these explanations, but its harmonism with the latter 
suggests that the disharmonism is due to its probable situation 
on the old valley wall rather than on the valley bottom.) 
Confirmatory evidence from other streams . — Brushy Fork. The 
northern debris boundary of the wide Raccoon valley to the west 
of Granville, as already mentioned, forms a divide between this 
valley and a similar one occupied by the headwaters of Brushy 
Fork. From this wide headwater valley Brushy Fork flows east- 
ward toward a narrow rock-walled channel. This channel reaches 
its narrowest portion about a mile farther east and then very 
slowly widens until its junction with the valley of the North Fork 
of the Licking. Glacial debris in situ lying against the valley wall 
with water- laid material above has been noted. In its wide drift 
filled headwater portion and its narrow rock-walled outlet portion 
it is strikingly similar to the valley of the Raccoon. Throughout 
its length it is about parallel to the latter stream. In a north-south 
direction the narrowest portion of its valley would fall in approxi- 
mate line with the narrowest portion of the valley of the Raccoon 
at Granville, the latter constriction representing the capture of a 
west flowing stream formerly tributary to the Alexandria river, 
which in turn was captured by the Brushy Fork. 
Rump Creek. This stream is the next south of the Raccoon, 
flowing nearly parallel to it and emptying into the South Fork of 
the Licking river. Its valley shows a decided widening toward the 
west and narrowing toward the east similar to the condition 
noticed in the Raccoon and Brushy Fork valleys, with the greatest 
constriction in the same approximately north-south line. The 
length of the narrow portion is, however, much shorter than the 
other streams, this being due to the swinging southwest at this 
point of the South Fork of the Licking to which it is tributary, by 
which its eastward extension is cut olF. No well data was obtain- 
able in this area. The physiographic evidence makes it not unrea- 
sonable to suppose that glaciation may have been responsible for 
the capture, but the theory of land-movement is equally as reason- 
able. 
