Eleventh annual report of the United States Geological and Geographical Survey of the Territories : embracing Idaho and Wyoming : being a report of progress of the exploration for the year 1877 . its of hard reddish-buff and graylaminated sandstones, almost a quartzite, which occurs in immense slidesof debris on the lower slopes. Higher up the mountain-side these areseen to be underlaid by heavy beds of gray, drab, and buff, cherty lime-stones and brownish-drab magnesian limestones, which reach up intothe crest at the station. The limestones are charged with characteristicCarboniferous fossils
Eleventh annual report of the United States Geological and Geographical Survey of the Territories : embracing Idaho and Wyoming : being a report of progress of the exploration for the year 1877 . its of hard reddish-buff and graylaminated sandstones, almost a quartzite, which occurs in immense slidesof debris on the lower slopes. Higher up the mountain-side these areseen to be underlaid by heavy beds of gray, drab, and buff, cherty lime-stones and brownish-drab magnesian limestones, which reach up intothe crest at the station. The limestones are charged with characteristicCarboniferous fossils, amongst them a medium-sized Orthoceras. Theangle and direction of their inclination is very variable, gradually steep-ening lower on the southwest flank of the mountain, where they dip atone point 65° to 75°, W. 25° S., while in the summit the dip is 35° to40°, W. to W. 25° S. The brownish-drab magnesian limestone near thesummit is very like similar ledges in the debouchure of the Gross VentreBiver. On the southwest flank of the mountain, within 300 feet of thesummit, basaltic and trachytic erratics were met with. JPlcvte XLtt- ~Mt. JB airct. Teton, Hit jr. Y Sta, ?rafe. H. Volcanic l* JTaclcsons JBasin , Surrey
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