MORROW COUNTY. ASTI 
Winchell, of the Michigan Geological Survey, that the Upper Waverly 
belongs to the Carboniferous, thus dividing between the Devonian and 
Carboniferous ages the series usually embraced under the single designa- 
tion of Waverly. For the upper or fossiliferous portion of the old Wa- 
verly the term Marshall group has been used by the Michigan Survey, 
and that name, intended to cover the base of the Carboniferous, ante- 
dates all other names. It is a question whether the term Waverly should 
be perpetuated by applying it to a part only of the series to which it was 
at first given. 
To what extent these subdivisions exist in Morrow county it is not 
possible to determine from the exposures that occur. It is only known 
that there is (1st) in the eastern part of the county a fine-grained, shaly 
sandstone, which is probably some part of the Cuyahoga shale and sand- 
stone, although having more the lithological characters of the Logan 
sandstone, its equivalent in the southern part of the State. (2d) Suc- 
ceeding this shaly fandstone is a valuable series of even-bedded sand- 
stones, useful for building and extensively quarried, the equivalent of 
the Berea grit.* (8d) Below this is a blackish slate, although its exact 
junction with the overlying Berea grit has not been observed. It may 
be separated from the Berea grit by a thin stratum of shale representing 
the Bedford shale. The thickness of this black shale has not been made 
out. It is succeeded by (4th) a considerable thickness of bluish or gray 
shale, seldom seen exposed. This is followed (5th) by the Huron shale, 
or black slate, which occurs in the western part of the county. 
Cuyahoga Shale and Sandstone.—The quarry of W. T. Appleman, on the 
north side of the creek, in section 7, Troy township, is in the sandstones 
of the Upper Waverly (Marshall). The surface of the country here is 
generally very broken, the streams having cut deep channels through 
the Drift and into the rock. These sandstone beds here lie horizontal. 
They are from one to four inches in thickness. But few feet can be actu- 
ally seen, but the bluffs and ridges show every indication of being com- 
posed of beds of the same formation 71 situ to the thickness of nearly a 
hundred feet. This stone is without the gritty texture of the Berea beds. 
It is more shaly, and has shining specks. Sometimes the heaviest beds 
show parting planes, by which they separate into thin layers, giving the 
whole very much the appearance of a true shale. The surfaces of the 
beds sometimes show fossils, the most conspicuous and common of which 
is Productus arcuatus, Hall. One or two specimens of Productus Shwmardi- 
anus, Hall (?), were also observed. South-west from Mr. Appleman’s is 
* Graduating below into thin-bedded shaly sandstone. 
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