DETAILED RECORDS. 261 
Gray and greenish limy sandstone, dark argillaceous sandstone, and sandy Feet. 
shale 900-1/230 
Gray limy sandstone and dark shale 1, 230-1, 325 
Gray and greenish limy sandstone and dark sandy shale 1, 325-1, 650 
Dark sandy shale and shaly sandstone and gray sandstone, the latter limy 
below 2,025 feet 1, 650-2, 050 
Black sandy shale and gray argillaceous sandstone 2, 050-2, 175 
Gray limy sandstone, dark shaly sandstone, and dark sandy shale 2, 175-2, 200 
Gray sandstone and dark sandy shale 2, 200-2, 300 
Dark-gray and black sandy shale and gray limy sandstone 2, 300-2, 336 
Dark-gray and greenish shaly sandstone and sandy shale and gray limy sand- 
stone 2, 336-2, 5.50 
Dark gray to black sandy shale 2, 550-2, 750 
Gray sandstone and shaly sandstone and dark -gray sandy shale 2, 750-2, 850 
Black, dark-gray, and gray sandy shale ,. 2, 850-3, 120 
Dark -gray and gray sandy shale and shaly sandstone 3, 120-3, 217 
Dark-gray to black sandy shale 3, 229-3, 277 
Gray and dark-gray sandy shale and shaly, limy sandstone 3, 277-3, 332 
Dark -gray to black sandy shale 3, 332-3, 390 
Dark-gray to black shale and brownish limestone 3, 390-3, 398 
Brownish magnesian limestone and dark shale 3, 398-3, 430 
Dark -gray and black sandy and limy shale 3, 430-3, 520 
Black shale 3, 520-3, 660 
Black shale with light limestone : 3, 660-3, 670 
Diameter of well, 7| inches. Casing used, 406 feet of 8-inch. Well perfectly dry, no 
water being encountered. 
1416a. Well near Thomas, Washington County. 
[Well begun November 20, 1905; completed December 31, 1905. Authority, S. D. McCloy, of Lyle & 
MeCloy, contractors. Samples preserved. Log compiled from samples by S. Sanford. Geologic 
correlations by R. W. Stone.] 
This log shows in a general way the character of the formations overlying the " Fifty- 
foot" sand in the Speer oil pool in Washington County. The formations are of Carbon- 
iferous age, including parts of the Pennsylvanian and Mississippian series. They are, in 
descending order, Monongahela, Conemaugh, Allegheny, and Pottsville (Pennsylvanian); 
and Mauch Chunk and Pocono (Mississippian). The approximate limits of these forma- 
tions are indicated. 
Record of well No. 1 on John R. MeMurray farm, if miles north of Thomas. 
Feet. 
Soil 0- 12 
Monongahela: 
Soft dark-gray and brownish limestone 12- 50 
Soft, coarse gray micaceous sandstone; water at 65 feet 50- 100 
Hard brown limestone and coarse gray micaceous sandstone 100- 150 
Soft, coarse gray sandstone 150- 200 
Hard brownish-gray limestone 200- 250 
Soft dark gray and black shale 250- 300 
Soft dark-gray and greenish, slightly limy shale 300- 350 
Soft black sandy shale .' 350- 395 
Coal (Pittsburg); water 395- 402 
