IVazrrly formations of Central Ohio. — Prosscr. 353 
formation be added, it will give seventy-one feet of the lower 
part of that formation. There is not such a sharp lithologic break 
in this quarry as in the Lithopolis one ; but perhaps as marked 
a lithologic change as any is to be found at the top of No. 11, 
or tlu' first sandstone layer overlying the thick sandstone near 
the top of the quarry. The top of No. 11, therefore, has been 
provisionally selected as the top of the Buena \'ista member, 
which will give it a thickness in this section of fifty-three feet 
eight inches, which is four feet four inches more than in the 
one at Lithopolis. 
Just below the railroad bridge is an old quarry in which 
some work has been done during the last two years. The 
section of the eastern bank is as follows: 
Total 
No. Thickness, thickiiess. 
10. Mainly thin sandstone alternating with ar- y'-\-_ 41' 
gillaceous shales, none of the sandstones ap- 
parently thick enough for use. 
9. Buff sandstone, probable top of the Buena o'~" 34'+ 
V^ista member. 
8. Shale parting. o'i"4- 33'6^" 
7. Buff sandstone, which in places splits into I'l" 33'5^^" 
two layers. 
6. Shale to sandy parting. o'3j4' 2>~'aV2" 
5. Massive layer of buff sandstone which is much 6' 32'i" 
rusted or iron-stained in places and consider- 
ably on the surface. Somewhat friable, but 
these older exposed surfaces are niot so friable 
as in the new openings in the lower quarry. 
This stratum is conspicuously shown on both 
sides of the creek below the railroad. The top 
of this sandstone by the hand level apparent- 
ly corresponds with the top of the heavy layer, 
or No. 9, of the lower quarry. Thickness va- 
ries from 6 feet to 6 feet 3 inches. 
4. Rather buff sandstones, the upper ones con- 411" 2b i" 
taining numerous specimens of Spirophyton, 
alternating with bluish shales. 
3. Bluish shales. i' 22'2" 
2. Thick la3'er of sandstone, considerably iron- 2'2" 212" 
stained in many places. This layer is No. 7 of 
the lower quarry. 
I. Bluish to bluish-gray sandstones alternating 19' 19' 
with shales, one layer i foot 11 inches in thick- 
ness, but most of the sandstone layers are 10 
inches or less in thickness. 
Creek level. 
