BULL. GEOL. SOC. AM. 



VOL. 13, 1891, PL. 45 





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MOUNT GOULD, LEWIS RANGE 



From South Fork of Swift Current, looking southwest. A characteristic cliff of Siyeh limestone overlying 

 Grinnell Argillite ; dark band of intrusive diorite. The valley is a glacial amphitheater typically developed on 

 joint plains. From lake to summit, 4,670 feet. 



