552 GEOLOGY OF OHIO. 
into the waters of Captina Creek. In the extreme north-east is McMahon 
Creek, and in the north-west is a branch of Stillwater Creek. The tribu- 
taries of Captina Creek do not have the rapid descent from the high 
dividing land which characterizes the other streams, and hence no- 
where, so far as I could learn, have they excavated their valleys deep 
enough to reach the two principal Barnesville seams of coal, except in 
the extreme southern part of the township, where the upper Barnesville 
seam is mined. A section was taken in the deep railroad cut, section 28, 
in which was found a seam of coal two feet thick, which was believed to 
be the equivalent of the highest seam at Barnesville, or the one forty 
feet above the tunnel seam. The strata revealed in this interesting cut 
are as follows: 
1. Yellow shales, with strata of limestone, seen on knob above the ee 
cutvon At Millison’ sland nee eacessecc mse ceetereactomen nee epee a 0) 
Top of cut. 
2. White limestone (supposed thickness) ..............s0.cesces sec aee cee ces cee ene ln: 
Be HY ClO Ww Slyale eee icece ee seng ae ated ede inec catlee obese aa ee au aene ONE CIE A Tse ee eee Po) a) 
A Bae les Shad es een Sarna. ie Saas aE SOAR ae OL A aNd oe OL OC) 
5. Coal.. ere : UTES UO UME TUS Raa) UV OEE) 
6. Shale, eel thin neers of iovetone BRIAR EAA RHEE CARMONA Gr acti suoddOude 4 0 
7. “Sandy and clay shale, top yellow, bottom dark viii... isto eseccees ee is 0) 
Sul Coal eu: PO eR PISA Ger AGN Cue MAE iho WSH Se RUB AN YA 0 2 
9) Black) shalevand slate ceive eevaccee er euetectentese stares Wie ee sligce ard se nemeeete 6 0 
TOs NCoallsiascciectte re Ci uage ee, eV nO EON Su i MO eaiaalaenenii cece astastibitrs 2) 0 
ST eG laurie ren eine Ok GUn es ORL BOM Ata duane ny teiont eee Mais lats selec near eae stints ty @ 
12. Black clay slate, with many thin layers of nodular siderite ore...... 12 0 
Is veBlueiclayCnotlamimatedyeeisonscwecsaelemecscaese scence seoecenene cee mete 4 0 
TAS Ban AStON yess ose ceee eo eee aL eR RA Oy CO or eee elle cinema es cela eters tal Perea 4 0 
Railroad track, two feet above the bottom of the sandrock. 
(Map XIV., No. 3.) 
The hill above the cut is the highest in this part of the county. 
In a railroad cut about one-fourth of a mile east of the deep cut last 
mentioned, we find the same two-feet seam of coal. The section is as 
follows: 7 
Ft. In. 
1. Shaly sandstone, with black shale below (not measured). 
SE, BX0y:)| IAT ERED We RM EM ATS AHAe ABOA AMA Aas aA tha Sn ar ba anne hg 20 
3. Underclay .. dou bs ie SEG eae av ANG 
4, Black clay ae Banh doaiaes of Salease ore in ilauens least oe denaas 12 0 
5. Sandrock, with blue, sandy clay, very irregularly bedded.............. 10 0 
Level of railroad track. 
There are probably eight feet of dip of the strata between the last cut 
and this. 
In the next railroad cut, about a quarter of a mile further east, we 
