THE SUNBURY SHALE OF OHIO 281 
2. Partly covered slope below the highway; but there are some 
thin projecting pieces of limestone. This zone probably repre- 
sents the Waterlime or Lower Helderberg; but on account of 
scanty outcrops its correlation was not definitely settled. Above 
the railroad bridge the Waterlime is quite well exposed on the 
bank, between the railroad track and the highway. The rock 
is of a drab color, and some of the weathered layers are very 
rough. Part of the layers are quite sandy, and some of them 
are a form of breccia. Fossils occur ; Leferdz/za is quite common 
in some of the layers, a few specimens of Streptorhynchus 
hydraulicum Whitf. were found, and a fairly large Gastropod 
shell - - - - - - - - - : a1 @ 17 
1. Massive light gray to drab limestone on the banks of Buckskin 
Creek to water level. A section of a shell, apparently Penxtam- 
erus, was found, while on the opposite bank of the creek above 
the railroad bridge imperfect impressions of shells, apparently 
Megalomus, were seen, so that this zone probably belongs in the 
upper part of the Vzagara limestone - - - - = ONT II 
This section was briefly described by Dr. Orton,’ the total 
thickness of which he made 500 feet, while in the above section 
it is 490 feet. He gave the thickness of the Niagara and Hel- 
derberg (Waterlime) limestones at the base of the hill as each 
15 feet in thickness, which is some I0 or 12 feet greater than it 
can possibly be at this locality. Dr. Orton gave the Huron 
shales as 332 feet in thickness, the Waverly shales as 50 feet, 
the Waverly quarry courses as 31 feet, the Waverly black slate 
as 15 feet, which is probably nearer the actual thickness of the 
formation than the statement in the above section; still, as a 
matter of fact, but g feet are shown in the quarry, and for the 
upper beds of Waverly group 42 feet, but it is true that beyond 
the highway the hill is somewhat higher than at the point where 
my section terminated. A diagrammatic section of this hill is 
given in accompanying figure (Benner’s Hill Section). 
Stony Creek.—The Benner’s Hill section is near the western 
line of Ross county, and the other outcrop in this county 
selected for consideration is one in the Scioto valley in its 
southeastern part. Stony Creek is a western tributary of the 
Scioto river, which it enters near the middle point of the eastern 
line of Franklin township. 
' lord., p. 645. 
