410 GEOLOGICAL EXCURSION TO THE KOCKY MOUNTAINS. 



of Grand river for a few miles below, are eroded out of the overlying 

 softer, gypsiferous beds of the Carboniferous. The latter can be seen 

 in section by following up a steep narrow ravine, directly east of the 

 town, which is cut in the Hanks of a basalt-capped plateau of Triasgie 

 and Carboniferous rocks. The harder limestones and qnart/.ites of the 

 Lower Paleozoic may be well seen by following the Denver and Rio 

 Grande Railroad a mile or two above the town through the tirst tunnel, 

 beyond which the Cambrian quart zites rest on the Archean. 



The bathing establishment is on an island in the river opposite the 

 town, and consists of handsomely appointed bath buildings, back of 

 which is an open-air bathing pool of masonry, nearly 700 feet (213m.) 

 long, at one end of which a stream of hot water from the springs* is 

 constantly pouring in, while at the other is a fountain of cold mountain 

 water, so that the bather can find any desired temperature. There is 

 also a natural steam bath, arranged in a cave in the limestone on the 

 south bank of the river just above the town. 



From the hill slopes on the north side of the river, opposite the 

 town, a beautiful distant view may be had, up the Roaring Fork valley, 

 of the snowcapped Sopris Peak, 12,S23 feet (3,000 m), one of the great 

 diorite masses Wreaking up through much disturbed I'aleo/.oie strata. 

 which are a characteristic feature of the Elk mountains. 



* Analyses of Olenwood Spring water in (/rains ]),r United states gallon. 

 [By C.F. Chandler, ph. d.J 





Xampa 



sluing. 

 1.0X9-8307 



Unnamed 

 spring. 



1, 086 •9440 





Tampa 



spring. 



Unnamed 

 spring. 



Chloride of sodium 



Bicarbonate of iron 



Trace. 



Trace. 



Chloride of magnesium . . 



13 -0994 



13-4011 



Phosphate of soda 



Trace. 



Trace. 



Bromide of sodium 



T»63r> 



-8L'()3 



Blborate of soda 



Trace. 



Trace. 



Iodide of sodium 



Trace. 



Trace. 





Trace. 



Trace. 



Fluoride of calcium 



Trade. 



rr 



i raoe. 



Silica 



1 -9712 



2 0119 



Sulphate of potash 



M >0484 



82 -3SG1 



0*2309 



13 -5532 



24-5971 ! 

 80 -2499 

 -2873 



13 -7034 



Organic matter 



Trace. 



Trace. 



Total 





Sulphate ot lime 



1,250-0411 



1,243-4303 



Bicarbonate ofHthia 



Tempera! ore 





124*2° 7. 



124 *2° F. 



Bicarbonate ol magnesia. 







I tioarbonate of lime 



24 -3727 



21 -8546 



. 







