G. D. Hubbard — Ancient Finger Lakes in Ohio. 241 



1878.* He recognized it as the bed of a short-lived glacial 

 lake. It was probably eight miles long with a maximum 

 width of about one mile. Weak shore lines and a level, lake- 

 clay floor with some peaty material and marl beds are the 

 evidence upon which this one is based. At present the plain 

 lies 50 feet above the last one described, and from one end 

 drains down into it ; while from the other end drainage goes 

 down through a narrow postglacial gorge in drift to the Tus- 

 carawas at Massillon. 



The third lake of the group lay in the level-floored valley, 

 west and south of Wooster. The sides of the valley are of 

 drift-covered rock, the floor at present of black muck, and 

 poorly drained. To the south near Shreve, the valley is closed 

 with a complex of moraine, looping across the valley and now 

 cut through by Killbuck creek but not deeply enough to thor- 

 oughly drain the lake bottom. About four miles south of 

 Wooster, two fine terminal moraines come down the east valley 

 wall and extend out half way or more across the valley, convex 

 southward. They are both buried knee-deep in sediments. A 

 hill about three miles south of Wooster composed of drift must 

 have been an island in the lake ; and several small swells a 

 mile or so nearer Wooster consisting of drift and gravel, and 

 overlain with fine sand and clay, represent the summits of 

 another morainic loop which the lake waters completely sub- 

 merged. 



The lake was one half to one mile wide at Wooster and 

 northward ; but southward it widened to nearly two miles. 

 Other evidence of the presence of a lake in this valley was 

 found at several critical points. In the eastern part of 

 Wooster is a large terrace of stratified gravel and sand at 

 approximately the 940 foot level. The sand was seen where 

 an excavation for a building was made in 1907, northwest of 

 the Pennsylvania R. R. station ; and the gravel could be seen 

 in the railroad cut, and in several minor excavations east and 

 south of the station. This level area is a delta at the mouth 

 of Spring Run, built when the lake stood at the level of its 

 summit. Some two miles northwest of Wooster, at the mouth 

 of Clear creek, is a smaller, similar deposit. Its surface is at 

 almost exactly the same level. It consists of gravel overlying 

 moraine, and along its west side, back a third of a mile, bed 

 rock appears in a steepened slope. Manifestly moraine was 

 formed against the ice and south of the rock point, and sub- 

 sequently, when beneath the lake, the moraine was covered 

 with the sediments washed down by Clear creek. Along the 

 west side of the valley from two to five miles south of Woostei\ 



*Geol. Surv. of Ohio, vol. iii, p. 529. 



