240 GEOLOGY OF OHIO. 
Devonian and Carboniferous ages, and may be enumerated as follows, in 
descending order: 
Approximate 
thickness. 
Cuyahogaishaleiand: sandstone. .:-.-c.sccsec-seccet ence cote cnc ee eee eee - 60 feet. 
IBCHEAY STG erenesese DA eee EPS PEPE EEE EET APRN YaceOr as CAN CERO Terie ely) SOM 
Bedtordy Slagle en ceiwe a. cue cescsccenccaccseneusteanosaecevegaciauieneisetetete een eae 20 Nei 
Cleveland shale. fcc. ccsteccucieasves donscense 1e8ca eee eNOS ee Aan 0) ee 
GHIS SMM al OMe Gy isa dausece oes cee Galeweleslcdda Sivgueu ee Uh dea tas geared eal We aOR Ree a) 
Tro mShiale wee eccccctssesss Menuse sec cc bekescaauuee tecieree an cae ney aan eae Sane 200) 
Olentangy Shaler. wc. csuieWeswseseiccsslee bude Aisaucneeds Suae tee ee SoA ON Ben eee SO ia 
Upper Corniferous (Tully and Hamilton limestones) ...............006 00 SONNE 
Lower Corniferous (Corniferous and Onondaga limestones)............ 1 
Motalvapproximatethickmnesseenucss- se eessceset ee eeere a eee meee 520. * 
Of these the first five belong to the Carboniferous, the remainder to the 
Devonian.* 
The Cuyahoga Shale and Sandstone.—This shale further north, and 
especially at Cleveland, has a very great development, reaching there the 
thickness of one hundred and fifty feet. In Crawford county it has not 
been certainly identified in outcrop, but most probably underlies the flat 
land in the eastern part of Vernon, Jackson, and Polk townships. It is 
met with in Morrow county, where the arenaceous character becomes so 
strong that it is often quarried for building. Further south it is proba- 
bly the equivalent of the “ Logan sandstone,” one of the members of the 
Waverly group. 
The Berea Grit.—This is the most important member of the Waverly 
group. Its line of outcrop is marked by a series of quarries which crosses 
the eastern tier of townships, the most important of which are located 
in Jackson and Polk townships. Beginning in Auburn township, the 
most northerly outcrop of the Berea within Crawford county isin S. W. 4, 
section 28, where it is found along a little creek on Samuel Hilborn’s 
land, and at the highway bridge. It also occurs near DeKalb, in Vernon 
township, on Mr. James Coruther’s land. Slight exposures occur also 
S. W. 4, section 19, along a little creek on land of Barnet Cole and Adam 
Freeze. It may also be seen on the land of James Campbell and Jacob 
Myers. In section 86 (Sandusky), it is exposed in a ravine on the farms 
of David Wirtz and Fred. Beech. In Jackson township, N. E. 4, sec- 
tion 1, is James Morrow’s quarry. 
SEcTION AT JAMES Morrow’s Quarry, Section 1, Jackson TOWNSHIP. 
Ft. In. 
Now Lhin-bedded: sandstone eee ve cise slot ees atalcneeeaten eaceusmeeectaeees i 0) 
No. 2. Heavy-bedded sandstone......... 0.0.0.0. -ecsseeee Haat aude Caatonenaenatueces 20 0 
No. 3. Shale (Bedford and Cleveland), not well seen .............++ sesseseee 33 «6 
Po tal GHICKNESS. é. aeiesice Meese decease neous srsoseanwea eee Cruces ee ee cate eeaeare ener 68 6 
* Dr. Newberry. 
