308 GEOLOGY OF OHIO. 
served in the county, but as the roof is sandstone, it is more liable to be 
reduced in thickness as the entry is carried farther into the hill. 
It will be apparent that the coal of the county is quite limited in 
quantity, and that, aside from the cannel, none of it is of first quality. 
Further explorations may disclose openings where it is thicker, and a 
considerable amount may be mined for local consumption. 
Carboniferous Conglomerate—Vhe following section, prepared by Mr. 
Hertzer from the fossiliferous limestone at the top of the hill above Dr. 
Wilson’s old coal entry to the bed of Licking River, and which I have 
modified slightly as the result of subsequent observations, exhibits the 
relations of the Conglomerate to the other rocks where it reaches the 
maximum thickness observed in the county : 
ai BT) | IN 
CN EY OED COTY MED AD CED ED as oe . Boro 
percep Limestone, very fossiliferous ............-..2.-----. 6 
wane atees See E’nre= Glenys a2 eye We Sera aa aac aoe eae aN pnd RNR GeV eet OE 
] 
Coarse sandstone’ --..2...---..+4 Grayeike eS IRENE pat oes ee elk OO 
= meal \Coal/seamanty itis th ol One See ina fon wubg ees eyayevens 2to3 
=3 =| ShalessiwitharoniOre haces cre cence eee eee ees 10 
by PG01 @ra0001 Rs POND OY, q pw 
[eset Ra ieee [as aes) Oey onier isin: COM GNOMES basco oddobocwre scocceeee 15 
: aE Be | 
==! Thin sandstone flags, with small Producita and Orthis 
= WU KoRelim it st nls (iia: 8 ETE INI CO Seg ea 65 
7 Coarse-craimed san@stone 2c cee sce ee tale cree 
ATONACEOUSISI ALES | Mey yam tales a ohn aie arate eee 
Thick, yellow sandstone layer 222222 = cos eee \ 60" 
Argillo-arenaceous shales, with Saxguinolites........ f 
Thick, yellow saidstone layer, with Aviculopecien, | 
JEU GEES, JUG ISO, CWO on a5 6 S66 aGG046 coes dose } 
Dense conglomerate, with Spiwifera, ete..... .--.-.-. 2to3 
Yellow sandstone, with Nucula, Goniatites, Platyceras, 
5) A Coat i gen OS ABST as eh ph a Ag at a lh 7a 
Blue arenaceous shales, with bands of sandstone, con- 
taining Nucula, Pierinea, Cypricardia, (2?) and Sangu- : 
PIO DITO S ay eee NE aT a ave Iu a area er 50) 
The iron ore, which here overlies the Conglomerate, is of special inter- 
est, as in many places in the county this alone, resting directly on the 
Waverly, marks the horizon of the Conglomerate. As a silicious iron 
ore, some of it is of great excellence. It caps some of the hills in New- 
ton and Mary Ann townships, and, judging from the debris around the 
old charcoal furnace, in the latter township, was the source of supply of 
the ores there used. 
In the hills, on the south side of the Licking, east of Newark, the Con- 
