76 GEOLOGY OF OHIO. 
320/ ON UippersMercerslimestonen.ceccesseeeucee sce eseneeeaeee eeeereeeeee 2 
10. Upperi Mercer Coals sto Shits. tcc enesccccecneccetseeeeceeene tes 2 
1d Mire-claysandishalesiiaccss.cscenecesescnecectee se termes 27 
289° 125) wowers Mercer limeston@ is. sore sc cosecencssseen eer eee eee 2 
13. Lower Mercer coal. 
The remainder of the section has been so thoroughly worked out 
and described by Newberry in his report on Tuscarawas county (vol. 
IIT), that it is not necessary to describe it here in detail. The order 
and the measurements which he reports can be adopted without ma- 
terial change. 
The Lower Kittanning or Mineral Point coal, No. 5, lies about 60 
or 70 feet above the Putnam Hill limestone. 
The Middle Kittanning or Pike Run coal, if the seam shall be 
named from the area of its best development and largest production in 
Tuscarawas county, No. 6 of Newberry, is in this region 40 or 50 feet 
above the Mineral Point coal, and a thin seam is often found between | 
the two. 
At 120 to 130 feet above the Pike Run coal, the blackband or 
Upper Freeport horizon is reached. Coal, clay and limestone all occur 
in characteristic development throughout the region. 
The Lower Freeport coal is irregular and uncertain, but it is fre- 
quently seen, as is also its limestoae. The Lower Freeport sandstone, 
in its conglomeritic phase, makes a prominent element in all sections 
here. The Mahoning sandstone is also conspicuous and well marked. 
In other words, the section found in the Connotton and Tuscara- 
was valleys is in all respects identical with the section followed down 
the Big Sandy. 
But the same cannot be said of all of the interior territories. The 
promising coal field now in process of development in the Connotton 
Valley rests under the ambiguity of the duplicated numbers, but it will 
be easy to show that its No. 6 is the seam of that name to the south- 
ward, or in other words, the Upper Freeport coal. Its position, so far 
from the margin of the coal field, is enough to show that the Kittanning 
coals could not appear there except as a result of reversed dip or other 
considerable irregularity. ‘There are low anticlinal axes traversing the 
field, it is true, but there is no such irregularity as the presence of the 
Kittanning coals would require. The Dell Roy and Sherrodsville coal 
is without a question the Upper Freeport coal. 
