BULL. GEOL. SOC. AM. 



VOL. 17, 1905, PL. 74 



^>., 



Figure 1. — Typical Cltffs of massive Beds of Bighorn Limestone 



On east slope of Bighorn mountains, west of Buffalo, Wyoming. Deadwood shales under talus in slopes to left 



Madison limestone in ridges to right 



Figure 2. — Ridge of Bighorn Limestone 



On east slope of Bighorn mountains, west of Sheridan, Wyoming. Slopes of Deadwood beds to left; granite on 

 extreme left ; Madison limestone to the right 



EXPOSURES OF BIGHORN LIMESTONE 



