36 THE BOOK CLIFFS COAL FIELD. 
which greatly decreases the value. The following sections, measured 
in different parts of the mine, show the general condition of the coal 
bed: 
Sections of coal bed in Carbonera mine. 
End of 
back 
entry. 
Room 
No. 3. 
Near 
entrance. 
Coal 
Ft. in. 
2 1 
1 
10J 
5 
4 
Ft. in. 
1 10 
1 
1 
1 1 
3 6 
Ft. in. 
2 
1 
8 
4 
Coal 
4 3 
7 5| 
7 6 
7 4 
In Utah within the area covered by this report there are no ship- 
ping mines and the coal has been prospected in only a few places. 
The coal lands have not been surveyed by the General Land Office, 
and the region is even more thinly populated than Colorado ; between 
Carbonera, Colo., and Thompsons, Utah, a distance of more than 50 
miles, there are only three ranches, which are situated near the mouths 
of canyons at the base of the Book Cliffs, where feeble streams flow 
throughout the year. In Utah, as in Colorado, the Mesaverde forma- 
tion constitutes the cliff-making rocks, and coal has been found at the 
usual horizon wherever sections have been studied. Near Bryson's 
ranch, on Westwater Creek, the following measurements were made: 
Section of coal-bearing rocks near Bryson's ranch, on Westwater Creek. 
Ft. in. 
Sandstone, thick bedded, buff 65 
Shale, carbonaceous 1 
Coal 1 
Shale, drab 2 
Sandstone, thick bedded, buff 5 
Shale, carbonaceous 3 
Sandstone, thin bedded, buff 40 
Shale, carbonaceous 3 
Sandstone, thin bedded, buff 10 
Coal 10 
Shale, carbonaceous 5 
Sandstone, thin bedded, buff 5 
Shale, carbonaceous 1 
Coal 1 10 
Shale, carbonaceous 2 
Sandstone, thick bedded, buff 5 
Sandstone, shaly, buff 35 
Sandstone, thin bedded, buff 4 
Sandstone, thick bedded, buff 4 
Shale, carbonaceous 3 
Coal 2 9 
Shale, carbonaceous 4 
Sandstone, thin bedded, buff 20 
