HURON AND CLEVELAND SHALES OF NORTHERN OHIO 357 
LAKE SHORE SECTION IN WESTERN PART OF BEACH PARK 
TOTAL 
THICKNESS 
Ft. In. Ft. In. 
6. Blue, micaceous, laminated, platy sandstone, 
which is near top of bank, continues on up to 
the top and is worn away toward the axis of the 
Nol THICKNESS 
(= 
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Sic ere renin Reet ers nite (Sry iean ay Naam, oe Nalin Reng eet 6 II 13 Dr 
4. Blue, thin sandstone from 1} to 2 in. thick..... ae Iz= 6 35 
3. Blue to gray and black shale from 6 to 7 in. 
Bia keep any ee OR eee ss Gas Bee eis es 63 6 St 
2. Blue, thin sandstone from 14 to 3 in. thick..... ae ge OS rh 
1. Mainly gray to blue, argillaceous shale with 
some thin layers of black shale. Lenticular 
layers of clay ironstone occur in these soft shales, 
which are like those in the Chagrin formation 
in the western part of Cleveland. Layer of 
blue, thin sandstone near base of section. Lake 
ERG a Brahh echo re aes eae, en eee 5 5 5 5 
All of the above section closely resembles lithologically the 
Chagrin formation as shown along the lake shore to the west of 
Cleveland and Rocky River. A view of the eastern limb of this 
anticlinal fold to the east of the bathhouse is shown in Fig. 6. 
Avon Point Cliffs—The blue, conspicuous sandstone was fol- 
lowed in the cliffs bordering the lake to almost opposite the northern 
end of the road running south to Avon Center, about one-fourth 
mile southwest of Avon Point. The writer is uncertain whether 
this sandstone shows or not in the cliffs at Avon Point; but to the 
east of Avon Point in Avon Lake it has thinned to a somewhat 
concretionary layer from a fraction of an inch to: 2 in thickness. 
Two it. or more below is another thin sandstone and 4= ft. below 
that is a zone of three sandstones separated by 8 or g in. of shale. 
Still lower, not far above lake level, are several thin sandstones 
and the lower shales contain lenticular ironstone concretions. At 
this locality there are 1o ft. or more of apparently black Cleveland 
shale forming the upper part of the cliff, below which are some rs ft. 
