762 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Craws a rock ridge sets in wliicli stands 8 to 10 feet above the' plain and 

 leads eastward past Sugar Ridge village. This also received a sand 

 coating. 



For several miles south from Bowling Grreen small sand ridges appear 

 which seem to have been formed by the wind from sand deposited in a 

 shallow bay that extended up Portage Valley a little farther west than the 

 meridian of Bowling Green. This bay must have been very shallow, for 

 the railway altitudes at Mermill and Mungen indicate that its bottom was 

 about 685 feet. From near Rudolph, about 8 miles south of Bowling Green, 

 a belt of sand leads eastward through Jerry, and thence northeastward 

 through Freeport and Bradner into the edge of Sandusky Count} \ It is 

 about as strong as the one which passes through Bowling Green, the dunes 

 being from 10 to 25 feet in height and the belt of sand about one-fourth 

 mile in average width. The lake seems to have extended southward on the 

 line of Wood and Sandusky counties nearly to Rising Sun, for another sandy 

 belt sets in a mile east of that village which leads northeastward about to 

 Helena. This sand belt is in places nearly a half mile in width and has 

 been drifted into dunes 10 to 20 feet in height. It is the easternmost promi- 

 nent sand belt found in the distinct between the Maumee and Sandusky 

 rivers. A few low sand ridges appear between Helena and Haven station 

 (4 miles west of Fremont), but they are seldom more than 10 feet in height 

 and but a fraction of a mile in length. 



A well-defined gravelly beach leads past Haven station in a course 

 from north-northwest to south-southeast. It can be traced from the south- 

 east corner of section 2, Jackson Township, to the south side of section 13, 

 a distance of over 2 miles." Its height is 4 to 8 feet and breadth 50 to 75 

 yards. For about a mile south from the south end of this beach no ridge 

 is found, but low sand ridges there set in which continue the shore in a 

 southeastward course to Sandusky River near the mouth of Wolf Creek, 

 about 6 miles above Fremont. 



On the east side of Sandusk}^ River there is a sandy plain extending 

 from Fremont southward into the edge of Seneca County. A few low 

 ridges, 5 to 10 feet high, are found about 6 miles south of Fremont in sec- 

 tions 33, 34, and 35, Ballville Township, Sandusky County, whicli probably 

 constitute the continuation of the beach. The beach becomes more definite 

 in section 19, Green Creek Township, and from that point runs in an east- 

 northeast course to Clyde. The altitude at Clyde is about 680 feet and 



