388 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



opposite directions toward it, those on tlie west being eastward and soutli- 

 eastward, while those on the east are westward and southwestward. But 

 in the course of the formation of the interlobate tract, the hne of junction 

 between the lobes (or their individual margins in case no junction was 

 effected) may have shifted back and forth to a distance of several miles. 

 On the assumption that this is the line of junction, there i-emains a belt 

 5 or 6 miles wide west of this line, which is sharply morainic. The knolls 

 seldom exceed 60 feet and are usually scarcely 30 feet in height, but they 

 have, as a I'ule, very sharp contours. 



West of this strong belt there is a gravel plain one-half mile Or more in 

 width, which runs from the bend of the Cuyahoga southward tlu-ough Akron 

 to Turkeyfoot Lake. On its western border there is a feeble morainic belt 

 in which basins are a prominent feature. Some basins 20 feet or more in 

 depth have an area of scarcely one-half acre each. This moraine is well 

 exhibited from the west part of Akron noi-thward along the west bluff of 

 Little Cuyahoga River and also west of New Portage. Its width is a mile 

 or less. West of this is another gravel plain called Ayer Flats, which is 

 1 to IJ miles wide and runs southward several miles from near the forks of 

 the Cuyahoga to the Tuscarawas, its southern end being known as Cople}' 

 Marsh. This gravel plain was apparently a line of outwash from the outer 

 member of a later series of moraines which crosses the Cuyahoga near the 

 bend below the mouth of the Little Cuyahoga. 



From a few miles north of Canton a narrow outer belt continues nearly 

 south to the Tuscarawas Valley just above Bolivar, while the main belt turns 

 southwestward, crossing the Tuscarawas above Massillon. The outer belt 

 has some prominent knolls near Canton 50 to 75 feet in height, but as a 

 rule its knolls fall below 20 feet. They are seldom so closely aggregated 

 as in the united belt farther north. This outer belt apparently forms the 

 glacial boundary and shows an interesting irregularity of outline on its outer 

 border, there being in nearly every valley or lowland tract, a projection of 

 the moraine beyond the line on the bordering hills, the amount of projection 

 being in some cases a mile or more. This is well shown on the road from 

 Canton to Bolivar, where scarcely a trace of drift appears on the u^^lands, 

 while in the valleys drift abounds in sharply outlined knolls and ridges 

 which rise abruptly 10 to 15 feet. A similar irregularity of border was 

 noted farther west along the road leading from Wiensburg through Berlin to 



