GLACIAL GRAVEL IN LIMESTONE, RIPON, WISCONSIN 65 
position of the gravel seam in the quarry is not such, however, as 
to lend much support to this. 
The writer has concluded that the balance of probabilities 
favors the view that the gravel seam is due primarily to glacial 
pressure, although solution has undoubtedly had a part in enlarging 
the parting. The gravel and sand may well have been in part 
deposited since the Glacial Period. 
