HURON AND CLEVELAND SHALES OF NORTHERN OHIO 349 
Dr. Newberry stated in his description of the Erie shale that 
“toward the west it rapidly thins out and is lost sight of south and 
west of the Vermilion river.’ 
Mr. Bacon stated that Mr. Terrell used to hunt for fossil 
fishes at this locality; that the largest number of specimens came 
from the bank above the bridge; that the horizon could be easily 
reached from the river level and would, therefore, be in the lower 
part of what is called the Cleveland shale in the above section. 
A well was drilled on the Indian Fort farm, at the house of 
Mr. S. J. Leimbach, 1} miles south of Rugby, in the summer of 
1912. The following data concerning it were furnished by Mr. 
Leimbach and Mr. Henry Schafer, who drilled it. The sandstone 
“shell”? near the base of the Bedford was struck at a depth of 55 ft. 
and 7 ft. added to this would give 62 ft. for the depth of the top 
of the Cleveland shale. The Devonian limestone was reached at 
670 ft., above which the driller reported 150 ft. of soft shale. In 
the well on the F. R. Morse farm, about one-fourth mile north of the 
Leimbach one, Mr. Schafer stated that there is a streak of bastard 
limestone 8 to to ft. thick about 20 ft. below the top of this soft 
shale. This hard zone is probably the Prout limestone, in which 
case the Olentangy shale is 120 ft. thick and 670 ft.-130 ft.+ 62 ft. 
leaves 478 ft. for the thickness of the Ohio Shale (Cleveland and 
Huron shale). 
On the western side of the Vermilion River at the Cooper or 
Miles bridge, a mile below Rugby, is a conspicuous cliff of Cleve- 
land shale. A few rods below the bridge is a gully in which the 
following section was measured: 
SECTION ON VERMILION RIVER BELOW COOPER BRIDGE 
= LOTAL 
No. “wes Tage 
Ft. Ft. 
4. Cleveland shale: This zone forms the conspicuous upper 
part of the cliff and is composed of black, slaty shale. In 
the gully, where 55 ft. are shown according to the barometer, 
all black except a one-half inch streak of soft, gray shale. 
On the highway up western bank near base of continuous 
black shale a calcareous, gray, lenticular layer 10 to 12 ft. 
long and about 2 in. thick with cone-in-cone structure.... 55+ 87 
' Geological Survey of Ohio, I (1873), 163. 
