ge 
No. 
No. 
4. 
CHARLES S. PROSSER 
SECTION OF VERMILION RIVER BELOW CooPER BRIDGE—Coniinued 
THICK- 
NESS 
Ft. 
. Alternating olive and blue layers of argillaceous shale with 
black, bituminous shale and thin layers of blue, micaceous 
sandstone. The light-colored layers of shale predominate 123 
. Black shale predominates but there are thin bands of light- 
gray shale with an occasional thin one of blue, micaceous 
SANSOME A ls coat ei as Ak Ser eae ial tek ay cave 5S 
THICK- 
NESS 
Tora 
Ft. 
32 
193 
14 
In the above section there is no evidence to show that the 
Cleveland shale extends below the base of the 55 ft. of black shale 
composing zone No. 4. The subjacent shales and thin sandstones 
may be referred to the Huron shale or its eastern equivalent, the 
Chagrin formation. 
The following section was measured from outcrops by the high- 
way climbing the eastern bank from the Cooper bridge: 
SECTION ON VERMILION RIVER EAST OF COOPER BRIDGE 
Bedford formation: Gray, compact, and very 
hard sandstone, from 6 to 7 in. thick. Farther 
up the highway is chocolate-colored, argil- 
laceous!shaley i aeiciay sears eeepc ce rian paeisald 
. Thin-bedded, blue, impure limestone alternat- 
Inge with shales ean semen aye sae aap ie ceed 
. Blue, argillaceous shale in upper part of zone; 
lower part composed of gray to drab, argil- 
laceousi shall ewe: rien sich Wier Mince nu ema eer eae 
. Cleveland shale: Black, slaty shale containing 
two layers with cone-in-cone structure. The 
upper one is about 1 in. thick and may be 
traced for some distance in the shale. Con- 
siderably lower and near the base of the out- 
crop is the other one that is a lens of dark-gray, 
calcareous rock 8 ft. to in. long and near the 
center 4 in. thick,,in which the cone-in-cone 
structure is well shown. The dip along the 
highway varies from 4° to 10° N. 40° W. Base 
of blackishale moti showin eee errs 
THICKNESS ne 
Ft. In. Ft. Tn. 
ae SG fe) 
I 5 SM 6 
3 I 53 I 
bos 50 
