350 The American Geologist. December, 1904. 
shale, the upper eight and one-half to ten feet of the formation 
being shown. The complete section is as follows : 
Total 
No. Thickness, thickness. 
4. Soil to top of bluff. 8' 28'8'' 
3. Soft bluish sandstones, weathering gray and 2 20'^" 
strongly iron-stained, which are medium thin 
bedded. 
2. Gray very soft, gritless shale with an arena- io'2" i8'8'' 
ceous layer near the middle. The line be- 
tween this shale and No. i is very clear and 
sharp. 
I. Sunhury shale. Very thin, laminated, black 8'6" 8'6" 
smooth shale which weathers to small sharp 
edged flakes. 
Creek level opposite sycamore tree. 
A little farther down the creek about ten feet of the Sun- 
bury shale is shown. The lower exposures are on the farm of 
Frank Milburn and to the north on the farm of J- W. Miller. 
The Sunbury shale is shown for some distance up the stream 
and after a covered interval of about one-half mile its last 
appearance is on the J. K. Black fami. where on the eastern 
bank a few rods below the swing bridge one foot is shown. 
On the same side of the creek a little below is a higher bank in 
which the lower Cuyahoga sandstones occur. The Black farm 
was formerly owned by E. Compton and this is undoubtedly 
the locality where Dr. Orton stated that the contact of the 
Huron and Waverly formations is shown.* It is to be noted, 
however, that the black shale is the Sunbury instead of the 
Huron (Ohio). 
Perhaps rather more than one-quarter of a mile up the 
creek are exposures of higher rocks on the Frank Cornell farm 
which was formerly that of S. R. Armistrong. About east of 
the Presbyterian church in the southern part of Blacklick vil- 
lage on the western side of the creek is a partly covered sand- 
stone bank, below which is shown the upper half of the soft 
shale zone at the base of. the Cuyahoga formation. At low 
water the lower part of the shale zone is shown a little farther 
down the stream and the following section mav be obtained : 
Geoi. Surv. Ohio, vol. iii, 1878, p. 639. 
