30 PETROLEUM OF PACIFIC COAST OF ALASKA. [bull. 250 
Section on Trout Creek. 
Feet. 
Shale 4 
Coal 63 
Sandstone 5 
The strike is N. 40° E., the dip 38° W. 
Several valuable seams have recently been opened in the valley of 
Canyon Creek and on the opposite (east) side of Carbon Mountain.! 
It is said that of fifteen openings in the same seam on Carbon Moun- 
tain which showed a range of thickness from 9 to 25 feet, nine rel 
vealed a thickness of 14 feet or more. About a dozen workable seams 
have been reported from this region. The writer has already pub- 
lished the following sections of the coal and coke seen by him in] 
this vicinity, which were all that were accessible Avhen he was there 
in 1903. 
Four seams are exposed on the east bank of Canyon Creek. Three 
miles above the mouth the coal has a thickness of 2 feet 9 inches, isl 
overlain by sandstone, and has a shale floor. The strike is N. 80° E., 
the dip 35° W. The section was measured at the level of the valley 
floor. This seam is variable in thickness, pinching out someAvhat 
higher in the bluff. 
Four miles above the mouth of Canyon Creek a coal has a thick- 
ness of 4 feet 2 inches; it strikes N. 10° E. and dips 60° W., and hass 
a shale roof and floor. 
At the south end of Carbon Mountain there is a high bluff where 
Bering Eiver has been pushed against the end of the mountain by the 
Bering Glacier, and here the following section was measured : 
Section at south end of Carbon Mountain. 
Feet. 
Sandstone 30 
Coke 1 
Sandstone 20 
Coke 2 
Sandstone 2to 5! 
Coke lto 5 
Sandstone 3 
Coke 1 
Sandstone 8 
Coke lfto 2i 
The strike at this point is N. 80° W., the dip from 20° to 25° N. 
It is the opinion of the writer that the foregoing sections represent 
distinct coals, and that, furthermore, from the smut observed by 
him, many additional ones will be discovered in the development of 
the country which are now concealed beneath the soil and the dense 
vegetation. 
■ Bull. U. S. Geol. Survey No. 225, 1904, p. 372. 
