DETAILED RECORDS. 205 
Dark and light shale — 
sandstone - 
3rown and light shale 
Dark slate 
Dark limestone 
liight shale 
Sard limestone 
Dark-brown shale ; caves 
jiight and dark shale 
3oal 
3ay 
limestone. 
Shale 
■Sandstone 
Hoal . 
Rock 
Slate 
>hale 
Sandstone 
Shale 
Hard rock 
3oal 
Fire clay and shale ■. 
Sandstone . 
Shale 
Sandstone. 
Brown and black shale; 9-foot seam of coal at about 820 feet 
Sandstone; a little salt water 
Shale; 6-inch seam of coal at about 900 feet 
Sandstone; some gas. 970- 
Shale 
Sandstone •_ 1, 010-1, 045 
Shale 1, 045-1, 055 
Sandstone ; heavy flow of salt water at 1,100 feet. 1, 055-1, 127 
Dark shale; 6-inch seam of coal at about 1,130 feet 1. 127-1, 134 
Sandstone; heavy flow of salt water at 1,170 feet 1 , 134-1, 174 
[Brown sandstone 1 , 174-1 , 184 
Dark sandstone; gas 1, 184-1, 196 
bark limestone 1, 196-1, 206 
psivk sandstone 1, 206-1, 218 
park slaty shale, finely jointed; caves badly 1, 218-1, 238 
Slaty shale ; limestone at bottom 1, 238-1, 345 
Salt water at 1,100 and 1,170 feet rises within 60 feet of surface. Hole dry below 1,196 
eet. " 
285. Well at Flat Rock, Crawford County. 
Well begun January 1, 1905; completed June 20, 1905. Authority, Creswell Bros., contractors. No 
samples.] 
This well was sunk for oil; none was found in paying quantity. The well started in the 
^cnnsylvanian (Coal Measures) series of the Carboniferous system and probably pene- 
rated the underlying sandstones and shales of the Mississippian. The record may not show 
very change in the rocks, but is given because few deep-well records from Crawford County 
lave been published. 
Feet. 
245- 
275 
275- 
315 
315- 
395 
395- 
402 
402- 
408 
408- 
430 
430- 
437 
437- 
447 
447- 
532 
532- 
536 
536- 
544 
544- 
549 
549- 
557 
557- 
575 
575- 
577 
577- 
582 
582- 
592 
592- 
600 
600- 
627 
627- 
635 
635- 
639 
639- 
641 
641- 
666 
666- 
676 
676- 
720 
720- 
750 
750- 
840 
840- 
880 
880- 
970 
970- 
980 
980-1 
,010 
