144 GEOLOGY OF OHIO. 
In going from; Drakesburgh to Garrettsville the surface descends nearly 
two hundred feet, passing down from a broad ridge or divide, which is a | 
marked feature in the topography, and which stretches connectedly north 
into the center of Geauga county. The top of this ridge, or table, is 
above the coal level from Freedom to Burton, and more or less coal has 
been found in it all the way, although it is usually thin. 
At Garrettsville the Conglomerate is fully exposed, and rises thirty feet 
above the dépét, or four hundred and eighty-five feet above the Lake. 
Two miles west of Garrettsville the base of the ridge referred to is reach- 
ed, and in the ravine by the road-side the following section is exposed: 
FT. 
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Pay AaReyeCE RIE HEN OVE CO Us Seed ao GOSU GbOSSUOkdn Sabous Haass eee ge Se 2 1 
3S. shalesawithybandslofesandstonernsaeee eee eee ee een eee Eee ane 20 
AN Blackss haley waitherom es eevee cet sis orca aor ere rere taper eran te evaenste a ter gare 1 
5. Sandstone to base. 
The top of this section is one hundred and fifty feet above the dépét at: 
Garrettsville, and the coal exposed is probably about the horizon of the 
thin seam, No. 2, the place of Coal No. 1 being below. 
In Mantua there are many natural outcrops of coal, viz., at the rail- 
road cut, north-east of the Corners, a few inches (two to four)thick; a 
mile south of the Corners, on Mr. Blaine’s land, sixteen inches; one and 
a half miles east of the Corners, six to eight inches thick. Three wells 
drilled near each other in this vicinity gave— 
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Paap Best: TANOG KOLO) CVSS CHURN ERR I Sey Seg Les eg Wiech e ol SURME Sa Pe AN hs ec 36 to 46 
Sreblackrshalewsce. css oe vets Sey eeape an eee een eaters Ri diet Aether ah lard ov, toeehets 20 to 40 
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Byte OAT oo OMEN SATE NE NERA EP ERE TS SAa BURL ONEE NL UPN: eMC Rh Ce 4 to 12 inches. 
6. Sandrock (bottom not reached). 
A boring was made one and a half miles south of the Corners, to the 
depth of one hundred and thirty-six feet, penetrating earth, sandrock, 
and shale, of which the thickness is not known. Coal was found six to 
eight inches thick. . 
The center of Charlestown rises to the height of five hundred and sey- 
enty-five feet above the Lake, and an outcrop of coal is visible on the 
King place, in the road leading to Ravenna, and about fifty feet below 
the center. This is evidently the Briar Hill seam. The hill on the op- 
posite side of the valley rises six hundred feet above the Lake, and nearly 
one hundred feet above the coal level, but the coal, if it exists there, is 
concealed. The valleys of the streams in this region are cut below the 
