34G GEOLOGICAL EXCURSION TO THE BOCK? MOUNTAINS. 



ITINERARY OF THE YELLOWSTONE PARK. 



By aknoi.d Hague. 



Mil.-s. 



Cinnabar to Mammoth Hot Springs 7 



Mammoth Hot .Springs to Xorris Geyser Basin '2'2 



N onis Gej 8er Basin to Lower Geyser Basin 20 



Lower Geyser Basin to Upper Geyser Basin 8 



Upper Geyser Basin to Yellowstone Lake 89 



Yellow stone Lake to Yellowstone Falls IS 



Yellowstone Falls to Mammoth Hot Springs H.'5 



Mammoth Hot Springs to Cinnabar 7 



At Cinnabar station the travelers leave the railway and continue 

 their journey for the next few days in Btages. The road follows the 

 Yellowstone river to Gardiner, thence np the Gardiner river to the 

 Mammoth Hot springs. The northern boundary of the Yellowstone 

 Park passes east and west through the junction of the Yellowstone and 

 Gardiner rivers. About one and one half miles beyond, the boundary 

 line between the States of Montana and Wyoming is crossed, latter 

 ing the Park the road follows the river, with the long spurs of Mount 

 Kvarts on the left and those of Sepulchre mountain on the right. 

 Mount EvartS, which rises 2,000 feet above the stream, affords an 

 excellent exposure of Middle Cretaceous sandstones and shales dipping 

 away from the river. Leaving the river the road crosses an ancient 

 travertine deposit, and ascending a steep hill reaches the Mammoth Hot 

 Springs hotel, situated on the finest of the travertine terraces. Travel- 

 ers generally reach the hotel about noon, and the remainder of the (Lu- 

 is spent in examining the hot springs and terraces, and the geological 

 features in the neighborhood. Several days might be spent here with 

 profit, visiting objects of interest within a radius of 10 miles of the 

 springs. 



MAMMOTH HOT SPRINGS. 



The Mammoth Hot Springs deposits consist entirely of travertine, 

 derived from waters heavily charged with carbonate of lime. The 

 total area covered by travertine is about two square miles, occupying a 

 narrow valley lying between Terrace and Sepulchre mountains. A 

 continuous deposit extends from the Gardiner river to the top of 

 Terrace mountain, a vertical distance of nearly 1,400 i'eet, the width 

 and depth of travertine depending upon the form of the original 

 valley. The top of Terrace mountain lies about t wo miles back from the 

 river. On the north side of the valley. Cretaceous and Jurassic rocks 



