ee 
B. N. A. BOUNDARY COMMISSION. 


CONCEALED 
| 
Figure 2—Short Creek. (§ 206 ) 

Face p. 90. 
)@Y Grey Sand, 
34 With Ironstone, 
4 Lignite. 


err 
are i mee 

SOURIS VALLEY 
LICNITE BED BURNED AT OUTCROP 
Figure 1.—(§ 386.) 
Soil. 
Sand 
With Unio-like Shells. 
Soil. 
4 Grey Clay. Quartzite Drift 
. Yellow 
Sandy Clay. * i 
With Ironstone. Sand, Clay. 
Plant Co’rse Roughly 
Grey Clay. Bed Stratified Sand 
Lignite, 1 ft. 
Sand. 

Sandy Clay. 
Figure 3—Porcupine Creek. 
Sandy Clay, (§ 236—in part.) 
With Ironstone. 
Sandy Clay. 
Yellowish. 
Lay Lignite. 
<aeey Hard Sandy Clay. 
~“A Lignite. 
} Grey Sandstone. . 
With Concretions. mu 
=4 Soft Sandstone. 
Hard Grey Clay. 
Clay, | Sandy Clay. 
Lignite. 
Hard Sand 
Sandy Clay. 
And Sandy Clay. 
4 Carbonaceous Shale. 
= Sandy Clay, with Corbula, &c. 
FH Lignite. 
7A Grey Sandy Clay. 
‘{ Carbonaceous Shale. 
Soft Sandstone. 

Water of 
Short Creek. Figure 4—Near East Butte. (§ 300.) 
SECTIONS OF THE LIGNITE TERTIARY. 
PLATE IV. 


