274 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



is scarcely any drift south and east of this creek. It is probable, however, 

 that it is in the line of a preglacial valley. 



At Mr. Sparger's, about 2 miles northeast of Fort Hill, a well 35 feet 

 deep strikes no rock. On an adjoining farm, at Mr. Eubank's, is a well 22 

 feet deep which penetrates the following strata: 



Section of EttbanKs well nea.r Fm^t Hill. 



'' Feet. 



1. Sandy clay - - - 10-12 



2. Blue clay - - - - - ^"8 



2. Sand 2 



At Mr. Cameron's, 1 mile south of Cynthiana, a well strikes shale at 

 20 feet. The drift consists of clay, yellow at top and blue near the bottom. 

 The well is near the north border of Brush Creek Valley. Not more than 

 100 yards south of this well, on the bank of Brush Creek, is a gravel pit. 

 The gravel is quite fine, few pebbles exceeding an inch in diameter. Many 

 granite and other Archean pebbles occur. At Cynthiana, just south of the 

 outer Wisconsin moraine, a well on Joseph Wilson's property was bored 

 to a depth of fully 60 feet without encountering rock. It is described to 

 be mainly in a blue clay "free from grit." 



In Adams County, a short distance west of Lovett post-office, the 

 following exposure was noted on the borders of a ravine crossed by the pike : 

 Road section near Lovett., Ohio. 



Feet. 



1. Silt, of yellow color 2-3 



2. Yellow clay containing a few Archean pebbles 4-5 



3. Reddish-brown clay capping the limestone - - 2-3 



This exposure is of especial interest, since it shows the presence of a 

 well-defined drift sheet above the residuary clay. It also is of importance 

 in geographic position, since it lies fully 5 miles outside the line commonly 

 recognized through Wright's reports as the glacial boundary. In many 

 other places in Adams and southern Highland counties a bed of reddish- 

 brown residuary clay caps the limestone, while above it is a drift sheet. 



In a trip from Sugartree Ridge to Sardinia several exposures were 

 observed, showing the following series: 



Generalized section of exnosxires near Sardinia, Ohio. 



Feet. 



1. Clay or silt nearly free from pebble.? 2^ 



2. Brown till, deeply oxidized and streaked in places with brownish-black seams 3-4 



3. Yellow till, usually very stony and slightly cemented; striated limestone pebbles numerous;- 



not so highly oxidized as No. 2. . . i - 6-8 



4. Blue till, very stony and partially cemented; striated limestone pebbles numerous; color very 



deep blue, almost black in places 10-15 



