444 G. D. Hubbard — Finger Lake Bed in Ohio. 



Art. XXXVII. — A Finger Lake Bed in Ashland and Wayne 

 Counties, Ohio, with Tilted Shore Lines ;* by George D. 

 Hubbard. 



Descriptive. 



In 1907 I passed through the region under consideration 

 and examined the evidence pointing to an abandoned lake 

 plain and accompanying features. A description of this one 

 with three others, all called Finger Lakes, was published in 

 1908,t but at that time no levels other than rough barometer 

 determinations were made and the warping of shorelines was 

 not then discovered. During the past two summers, further 

 and more exact work has been possible, hence the present 

 writing to set forth the results. 



Previous Work by Others. — In 1878 M. C. Read;}: refers to 

 this same lake plain and its swampy condition, and recognizes 

 it as connected with the moraine and drift deposits interfering 

 with former drainage. He also speaks of the " sand and 

 gravel ridges lying along the preglacial valley sides " but does 

 not even suggest that these ridges may be beaches. Of course 

 with no precise levels and bench marks to start from, he did 

 not level up the beaches and discern their loss of horizon tality. 



Claypole must have come very close to this lake plain, for in 

 his " Lake Age in Ohio ' ; § he describes Lake Ohio approach- 

 ing within 4-5 miles of the southern end of this bed, and a 

 marginal or foot lake lying entirely northward and extending 

 within perhaps one mile of the other extremity of it. He does 

 not intimate that a lake lay where the accompanying map 

 depicts this one : nor can the present author find either of 

 Claypole's lake beds. 



Leverett, in his voluminous and detailed report on the glacial 

 features of the Erie and Ohio Basins, |j points out the gravels 

 and sands at the upper end of the lake and calls them outwash 

 terraces built in front of the Wabash moraine. But he makes 

 no reference to a lake plain, as such, south of the terraces. A 

 recent publication by A. Dachnowski^f mentions a peaty deposit 

 about one mile N.E. of Big Prairie in the abandoned plain of 

 a Finger Lake. 



Name and Location. — The name Craigton Lake, from the 

 most important crossroads on the plain, is now given to the 



* Presented in abstract to the Ohio Academy of Science, Nov. 29, 1913, 

 and published with permission of the State Geologist. 



f This Journal (4), vol. xxv, pp. 239-243, 1908. 



{Geol. Surv. Ohio, vol. iii, pp. 519-522, 529. 



§E. W. Claypole, Trans. Geol. Soc. Edinb., vol. v, pp. 421-458, 1887. 



|| Frank Leverett, U. S. Geol. Survey, Monograph xli, pp. 565 et seq. 



If Geol. Surv. of Ohio, 4th ser., Bull. 16, p. 134. Peat Deposits of Ohio. 

 1912. 



