Mercer Limestone in Newark-Zanesville Region 



289 



FULTONHAM 



Hough's Hollow. At Fultonham in the southwestern corner 

 of Muskingum county there are numerous exposures of the Mer- 

 cer Umestone, which is well shown here in its relation to the under- 

 lying rocks. Several of these exposures were studied and sec- 

 tions measured, the first one being in Hough's Hollow, a ravine 

 directly north of the village. 



30. The upper one hundred feet or so of the hills is cov- 

 ered, but toward the base of this covered portion 

 rather large broken blocks of coarse sandstone are 

 scattered over the hillside. These blocks are 

 weathered black on the outside, but fresh fractures 

 show a rather dark brown color. Fragments of 

 Lepidodendron are commonly found. 



29. Homewood sandstone. Gray or buff sandy shales or 

 thin micaceous sandstone. 



28. Massive gray or buff sandstone composed mostly of 

 quartz grains. Base of Homewood sandstone. 



27. Light colored arenaceous shale with sandstone part- 

 ings. The sandstone layers are closer and heavier 

 toward the top and are similar in appearance to 

 the massive sandstone above. At the base of the 

 shale is an horizon of ore nodules. 



26. Fire clay. 



25. Siderite ore, nodular. 



24. Dark gray calcareous shale with fossils. 



23. Mercer limestone. Heavy dark blue limestone vary- 

 ing from 14 inches thick in one layer to 17 inches 

 thick in two layers only fifteen feet away. The 

 lower surface is somewhat irregular, and the lime- 

 stone is fossiliferous, containing crinoid segments 

 and brachiopod shells. The limevstone does not 

 become shaly on weathering as does that at Bald 

 Knob and Flint Ridge, but breaks out in large rect- 

 angular blocks which retain their shape and are 

 conspicuous in the bed of the stream for some dis- 

 tance below the horizon of the limestone. 



22. Black bituminous shale. 



21. Rather impure, blocky coal. 



20. Thin black bituminous shale. 



THICKNESS 



Feet 

 100 =i 



10= 



11 



10 



1-U 



U-1t% 



TOTAL 

 THICKNESS 



Feet 

 255A 



155fV 

 145tV 

 134t\ 



124fV 

 1241^2 

 122 f 

 113 



111T2 



noil 



110* 



