284 GHARLE SS. PROSSER: 
with one of the thickest outcrops known in the state. The black 
shale is also shown by the side of the highway above the cliff as 
it descends the slope to the northwest - - - - = B= 45 
2. Massive sandstone, brown on weathered edge, with a thickness 
of 1 foot 8 inches, ‘Then thin sandstone at top, olive shales in 
middle, and thin sandstone at the base, with a total thickness of 
I foot 5 inches. At the bottom a massive, fine-grained sandstone, 
1% feet thick. The total thickness of this zone is 4 feet 7 inches, 
and it was regarded by Dr. Orton as representing the Waverly 
quarry courses' or Berea grit. If this correlation be true, then 
there is to be noted a remarkable thinning in the formation when 
compared with the Benner’s Hill section or the quarries in the 
vicinity of Waverly - - - - - - - - - 44+ 17 
I. Bluish to bluish-gray shales, with thin layers of sandstone, to 
the creek level. Some of the layers of sandstone show fine 
examples of ripple marks, and one layer about 514 feet above 
the base has a thickness of 6 inches. This zone was referred to 
the Waverly shales by Dr. Orton, who stated that “the upper- 
most 25 feet of the Waverly shales appear here.” ? The base of 
this section is at the creek level on the upper side of the viaduct, 
which is hardly more than 4 feet above the level of the Scioto 
river, so there is scarcely any opportunity for an exposure of 25 
feet of these shales at this locality. It is not improbable if the 
rocks were exposed to a greater depth at this point that thicker 
sandstones would be shown and all this lower part of the section 
might be referred to the Berea grit. The thin sandstones with 
beautiful ripple marks rather support this inference, since similar 
ripple marks occur so generally in the lower part of this forma- 
tion and not in the upper part of the Bedford shale - - - 12% 12% 
This section was briefly described by Dr. Orton, who reported 
‘twenty-seven feet of the Waverly black slate, the heaviest sec- 
tion of this stratum yet reported in southern Ohio,’’3 which is 
practically the same as that obtained by the writer. 
The bluish-gray shales with thin alternating sandstones are 
exposed on the banks of the creek above and below the high- 
way bridge, while the lower massive stratum of the Berea 
grit is shown at the top of the bank immediately east of the 
bridge. 
Another section was measured on the south bank of Stony 
* [bid., p. 650. 2 [bid., p. 650. 
3 [bid., p. 650; also see p. 624, where it is stated that this is “the best section of 
it to. be found in all the Scioto valley.” 
