WELL LOGS USED FOR STEUBENVILLE CONVERGENCE SHEET. 109 
elevation of about 1,253 feet at the well, or 217 feet above the level 
of the mouth. The Berea sand is therefore 1,548 feet below the 
Pittsburg coal. 
11 ell o. '205. I his well is No. 1 on the Martin farm. The Berea 
sand was found at a depth of 1,534 feet. The elevation of the well 
mouth is 1,115 feet. I he Pittsburg coal at the well is at an elevation 
of 1,218 feet, or 103 feet above the level of the mouth. The Berea 
sand is therefore 1,637 feet below the Pittsburg coal. 
Log of Martin well No. 1 {No. 205 ) 
Top. 
Bottom. 
Shale, dark gray, soft. 
Sand, gray, soft. 
Shale, gray, soft. 
Shale, red... 
Sand, white, soft. 
Coal. 
Fire clay. 
Shale, dark, soft. 
Sand, white. 
Coal. 
Shale, gray. 
Sand, gray, very hard. 
Shale, gray and brown, soft 
Sand, gray, soft. 
Shale, black, soft. 
Sand, gray, hard. 
Sand, white, soft. 
Shale, black, soft. 
Sand, brown. 
Limestone, white, hard. 
Sand, yellow, hard. 
Shale, . 
Shale, black, Sunbury. 
Sand, Berea, dark, hard 
Feet. 
12 
52 
82 
202 
347 
362 
367 
377 
452 
467 
477 
497 
517 
617 
632 
707 
722 
890 
925 
940 
950 
1,176 
1,524 
1,534 
Feet. 
52 
82 
202 
347 
362 
367 
377 
452 
467 
477 
497 
517 
617 
632 
707 
722 
890 
925 
940 
950 
1,176 
1,524 
1,534 
1,564 
For the southern half no wells within the Burgettstown quadrangle 
have been used to extend the convergence sheet to the east. This is 
owing to the fact that the wells of Pennsylvania do not furnish 
reliable information as to the position of the Berea sand. East of 
the Pennsylvania line the Berea sand is no longer an oil or gas 
producer. 
CORRELATION OF THE BEREA OIL SAND WITH SANDS IN 
PENNSYLVANIA. 
East of the Steubenville quadrangle the sand known as the Hun¬ 
dred-foot is the great oil and gas producer. It lies below the hori¬ 
zon of the Berea sand. Any wells drilled to it must pass through 
the Berea sand if this rock is present. The logs of eight wells drilled 
for gas along the west edge of the Burgettstown quadrangle will be 
given for the purpose of discussion and correlation of the Berea with 
the sands of Pennsylvania. 
