U. 8. GEOLOGICAL SURVEY BULLETIN 613 PLATE Xill 
A, WEST FRONT OF SANDIA MOUNTAINS NEAR BERNALILLO, N. ME 
roup). Plainof Santa Fe marl 
Granit d pped by sandstone and thick gd of | (Magd 
syetaathteer 
B. CRATER OF EXTINCT GEYSER THREE MILES WEST OF SUWANEE, N. MEX. 
View northwand; railway in distance. The — is silica Sopesee by hot water, which has built up a low 
ound the c 
