BULL. GEOL. SOC. AM. 



VOL. 19, 1907, PL. 27 



FiGUKB 1. — Church Rock 



An outlier of red sandstone of the Chugwater formation in the southern portion of the Laramie 



Basin, Wyoming 



Figure 2. — Limestone kidge xm uri'EU p.\rt op Chugwater Keu Biods. somnvK.sT or Casper 



Kidge of Cloverly sandstone to the left; hills of Bonlon shalo lo the right. Looking west 



MEMBERS OF THE CHUGWATER FORMATION 



