BULL. GEOL. SOC. AM. 



VOL. 32, 1920, PL. 8 



Figure 1. — View of south Laccolitii of Wkst Butte 



The view is talien fvom the east at a distance of one mile. An incipient cirque appears on 



its east front. 









:.au ^ .^ 



7 i' - 



C'^ 



"^ 



Figure 2. — Yiem' of Sill or sm.vll Laccolith which furnished Specimex Number 8, 



^^'est p.utte 



WEST BUTTE, SWEET GRASS HILLS, MONTANA 



