174. GEOLOGY OF OHIO. 
Mr. Ferguson’s opening, near Unionport, tae main coal is from four feet 
two inches to four feet nine inches thick, roofed by one foot of clay shale, 
no roof coal being seen. - The intimate structure of the bed is as follows: 
FT. IN. 
Te  (COdbs cca tise esters oblate 2 wide srererere ays elem et mere epee eae atennere mae 1 
2.) Parting’ so.css cea ecleeiet seccr ach Pi ois cia ae eee eee noe eco ae eens % 
Se CODU RINE NS eee SEAN cisvatena ave olelal syatelalsieinlero etale ralele ane ere tetee cree ats avateray 6 
AS EEN URLS CS e SOG COO6Od GOOG. BOOOGs bobe sabe BOOS cude cOOdo0 cop Sao Gebeee -OC $ 
Bi, GOW gate ait ee aie: wine wlclep en elects weuais Gils Sere ale: nis inie vere ee ote one Cerne ae 94 
Gey (Partin oases. (mica cele ae) seeiniee ie Solel sistetein Stal ne ooh Sate ereeaae a area remtare Smale ts 
Uist COD mec cectncet cee Bde aD SSO GOO adooSC Selaces cas seen eee oe 1 1 
8: Parting: (o2scet cot coment venice cocisics ceeiel sane ee ee eer eer mee 
Ose CO ali Be son eee Boas ser eeite es ieee acter eee ia ate ee ae eee 2 
_The upper pyrites band is occasionally present at about ten inches ion 
the roof, but it is not persistent. Nodules of pyrites are very common, 
and at times are very large. They are surrounded by soft coal and are 
easily separated. The coal is said to be of very geod quality for domestic 
use. Southward, along the road to York, roof coal makesits appearance, 
and is covered by nine or ten feet of shale on which rests a thin coal, 
most probably Coal No.9. At Mr. Voorhis’s bank the main coal is five 
feet six inches, and the roof coal, eight to twelve inches 5 thick: At Mr. 
Parker’s opening the bed is— 
LA Root coaletec at) — see eee eee seem 1 foot 6 inches. 
2% CHER? cadacc Jt ete a tetehbinteeveie atele cretouetetiatte Sep 10 inches. 
Se 1 COa) cee 8 cot oe oeiais eee EES ee oe 5 feet 2 inches to 5 feet 6 inches. 
The coal is good but pyrites is apt to be troublesome, as nodules occur 
five to eight inches in diameter. | 
Underlying the coal there are no rocks of interest un © \+ 3 (1 
Crinoidal Limestone, which, in the northern portion of the township, 
is seen about two hundred feet below Coal No.8. It may be seen crop- 
ping out at various localities along the railroad, but is best exposed, near 
Unionport on the road leading north from that station. ‘It is about five 
feet thick, and contains great numbers of Lophophyllum proliferum, 
- Chonetes, Productus longispinus and other species, all of them poorly pre- 
served. From this locality two imperfect specimens of Petalodus were 
obtained. On the same road the blossom of a thin coal was observed 
two or three feet from the limestone. At several places along the rail- 
road the blossoms of a very thin coal was seen, nearly three hundred 
feet below Coal No. 8. Near Bloomfield Station, some borings were made 
but no record was preserved. It is reported that two coals were cut, 
eighty feet apart, the upper two and one-half feet and the lower four 
feet thick. From their relations to each other, and to Coal No. 8 above, 
it is most probable that these are Ooals Nos. 6 and 7. 
Cross Oreek Township.—in the greater portion of this township, Coal No. 
