652 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



will be termed the Painesville moraine. Near Ashtabula, Ohio, a third 

 ridge sets in, to which the name Ashtabula moraine may be applied. A 

 short distance west of Griraixl, Pa., a fourth ridge appears, which will be 

 known as the Girard moraine. In western New York later moraines appear, 

 but as none of them are coalesced with this morainic system west of the 

 interlobate moraine that occupies the high divide west of the Genesee 

 they can scarcely be included in it, and are accordingly treated separately. 

 In the interlobate belt this morainic system and some of the later moraines 

 become blended and form a spur northward along the high divide to its 

 northern limits west of Attica. They seem also to be combined into a 

 sino'le broad belt from this interlobate eastward to the Genesee Valley. 



The position and relation of each of the members of the lake escarp- 

 ment system may perhaps be best outlined by following the system through 

 from west to east. 



DISTRIBUTION. 



The Avesternmost appearance of this system seems to be in a weak till 

 ridge which lies along the north side of Euclid Creek east of the village of 

 Euclid, and which comes to Chagrin River about 2 miles south of Wil- 

 loughby. The I'idge is scarceh' strong enough to admit of easy tracing 

 and the depth of drift along it is remarkably slight, the rock being struck 

 usually at only 15 to 20 feet; yet tliis seems to be the natural line of 

 continuation of a better defined morainic ridge which sets in east of 

 Chagrin River. From Chagrin River eastward to Grand River there is a 

 well-defined till ridge which follows the nortli l^luff of tlie west-flowing 

 part of East Chagrin River past Kirtland and comes to the south bluff of 

 Grand River at the bend south of Painesville. 



From Painesville eastward two moraines are foxind'in the place of the 

 one which was found west of that city. The outer, or Euclid, lies along 

 the face of the escarpment south of Grand River, while the inner, or Paines- 

 ville, follows the north side of the river and holds it in its westward course 

 from near Austinburg to Painesville. The moraines pass the north end of 

 the Grand River Basin without notable deflection from a direct course. 

 The ice sheet seems to have been too thin or too weak to extend a lobe into 

 the basin. The Euclid moraine passes south of Austinburg and East Plj'- 

 mouth, Ohio, forming the north bluff" and determing the westward course of 

 Mill Creek, while the Painesville moraine lies parallel with it and about 2 



