MORROW COUNTY. 259 
fine-grained, and micaceous. The mica scales appear specially on the 
planes of bedding. Although this stone is usually soft, and crumbles 
under pressure, or on exposure to the weather, some of it is harder, yet 
equally fine-grained, and in beds of about a foot. It is quite distinguish- 
able from the Berea grit as seen at Mt. Gilead, or at Leesville, in Craw- 
ford county. It sometimes shows, at Mr. Lavering’s, masses of hard, 
blue, silicious limestone. Irvin Lefever has a slight exposure of similar 
beds on his farm, three-fourths of a miles south-east. 
The Berea Grit.—The quarries in the Berea grit near Iberia are owned 
by O. C. Brown, section 23, J.J. McLaren, section 34, David Colmery (not 
now worked), John T. Quay, Benjamin Sharrock. Stone also shows on 
Mr. Gurley’s land, a quarter of a mile south-east from McLaren’s quarry. 
That of Mr. Brown covers the horizon in which fall all the others. The 
section here is as follows, in descending order. The beds lie so nearly 
horizontal that no dip can be distinguished : 
SECTION IN THE BEREA Grit AT IBERIA, Morrow Counry. 
No.1. Drift 3 feet. 
‘“ 9. Thin beds of sandstone, with distinct quartzose grains; beds 2 to 5 
TTUC TCS HIPUE PN tnt eye yy aes a re cee iiamiare tee eerie AS luis MeO nes eC TBs Vt OOteeus 
‘« 3. Heavy beds of sandstone (1 to 3 feet), with evident quartzose grains, 
OW HNL WOE, WAS SCE ANN caa6 spdeodood opoobeanbodoooonsaeueKae ifs} 3. u@ BBD & 
See Wale (anvarvalasapOOLlyiSCEM))> selec. = alos cits so -2 sce cece seein ciel at). 
The thirty feet of shale (No. 4, above) is obtained by measuring from 
the level of the water in the Rocky Fork of Olentangy Creek, which 
passes near Mr. Brown’s quarry, to the bottom of the sandstone in the 
quarry. This interval is known to be occupied by shale, but its special 
characters are hid by the sloping turf-covered talus. It can only be seen 
about six inches below the sandstone, where it is fine and blue, and in 
beds one-half to one and a half inches. It thus appears that-the heavy 
beds of the Berea continue intact down to the shale, as in Crawford 
county, although at Mt. Gilead the heavy sandstone graduates below into 
a thin-bedded and shaly sandstone, before the beginning of the shale. 
