698 GEOLOGY OF OHIO. 
making the identification of the coal above the last and that mined at 
Carbondale quite positive. So that if the coal which plunges beneath 
the valley west of Carbondale hill is the Great Vein, this coal is certainly 
about fifty feet below the Carbondale coal, and of this fact I have very 
little doubt. It is true that by the barometer it is only five feet above 
this last outcrop of the Great Vein to the west, but the average dip to 
the east fully accounts for this fact. This Carbondale coal is much split 
up, varies greatly in thickness, and is more melting and more sulphury 
than the average of the Great Vein. The following is a section of the 
thickest part measured by me: 
FT. IN. 
Sandstone. 
Shale is eh SE eee ye 2 ee tne a era EG OUA ae 
CO ai te ALES Blt ean AD tl alg ate Ciais A Rul Ea aA aC ue 8 
SSH ale ihe pats Se eH a eS eS aN eg Ie sta atc aia senna peat sep -. Ato6 
CO a eee ei aE ie a aa a Cae at LIE hete e  e ree 2 6 
Shales. o.55 6 ease he ee es aoe cialle ale Slabiais See Sie mle arerepa ne Poe crenettetere eure 55 iO 
COal cee 0# 2s Secclie a wile o alert eee eels me ee elcie ie ete tetets Store ete eS eee rete rette wa 6 
Fire-clay. 
One mile below the mouth of Meeker’s Run one exposure of the Great 
Vein made by a railroad cut shows that the sandstone has cut away the 
upper part of the coal. But in the greater part of York township there 
is a body of shale above the coal, and the latter often reaches a thickness 
of eight feet. South-easterly it gradually passes below the surface, and 
is reached only by shafting. 
The following sections illustrate the local peculiarities of this coal in 
different parts of the field when no part of the coal originally deposited 
has been removed by erosion : 
Maginnis’s Bank, Gaver’s Mill, Akron Iron Company, 
Straitsville. Salt Lick township. . Monroe township. 
3 Shale. === Shale. Shale. 
Coal, 8 in. 
Shale and pyrites, 4 
1 in. : , : 
Coal, 2 ft. 4 in. Coal, 3 ft. 11 in. 
Clay parting, 3 in. 
Coal, 10 in. 
Clay parting, 1 in. 
Coal, 6 ft. 10 in. 
Shale, 24 in. 
&| Coal, 1 ft. 103 in. 
1, 5 ft. 10 in, 
Shale, 3 to 4 in. Coal, 5 ft. 10 in 
Coal, 1 ft. 8 in. 
Shale, 2 to 3 in. Shale, # in. 
Coal, 4 in. 
Coal, 2 ft. Shale, # in. 
Coal, 2 ft. 9 in. 
