HURON AND CLEVELAND SHALES OF NORTHERN OHIO 329 
At the lower end of the cliff only the black shale of zone No. 7 is 
shown where it is 8 ft. 2 in. thick. For some distance farther up 
the river the rocks rise so that the zones beneath this concretionary 
black shale are shown; but after passing the bend they dip down 
again so that at the southern end of the cliff only the upper black 
shale is shown. A section at this locality is given by Dr. Kindle in 
which the 9-ft. zone of “‘fissile black shale with numerous large 
spherical concretions”? obviously corresponds to zone No. 7 of the 
above section. 
McGue section.— 
SECTION ON THE JAMES McGUE Farm 
iy THICKNESS Tee ke 
Ft: In. Ft. In. 
nS bowlder clay and other drift... ............: 
14. Blue shale; but entire thickness of zone not 
SIEVON INS colnet oe eee ane ae aa 4£ 10+ .. 
13. Black shale from } to 2 of an in. thick....... 3+ 9 9 
BEES UTEIS CU G sei begs, cto Aspe oadicer ale ns ois tusie eles Wd 5s + 5 ) 8} 
stems ACK AS MAC et Ue uketet wate 'n vse ty shales wloe ee + 23 ) 35 
aes Ne SMC Haun 2 2 no, eavtenayanse che trai sae) aera svels a, os 2- oO I 
Se lackeshialeb yen... .iottacukr ans pace bawene ew 3a 8 II 
PIC ISH ALC Fates. cts Gicts ics ins 8 he ee mes oc 8 ope 
PRACKESHAled sh, sr. 2 fas sata sce aoictiteie Ne eee 2 as Fi 103 
6. Blue shale; toward the lower end of the bank 
two somewhat irregular-shaped concretions 
TiS ae le eer hee es ene Og ae ua eS 5 103 
Pes C SHA Ohyere nie oieiaracigieten a katste lee ia selnyorn ye ve ane 5 4 II 
4. Blue shale with an occasional very thin layer 
of black shale near the center............... re 65 4 6 
SPM ESIACKA SNAG nies Slonre Bt era seals Cheisiw Wi viens ete es ahh 3 3 rity 
Pe MTCIS AON tore ssh tees hoa Hach ddins ot a0 33 3 i 
1. Black, hard, bituminous, fissile shale which is 
rather massive and slaty before weathering. 
Near the top are numerous spherical concre- 
tions which were seen only in the upper part of 
the zone. It also contains marcasite con- 
cretions. Two ft. 4 in. are shown where the 
above section was measured and 3 ft. 5 in. at 
upper end of cliff, but not reaching the base of 
LTR ZIG ME Pama, ewes Sys) Soe she za auaolicse dl Liye) wis wieushe 3 s+ 3 s+ 
07d... 201. 
