414 GEOLOGICAL EXCURSION TO THE ROCKY MOUNTAINS. 



and broken them by thrust faults. Along the upper ridge of Aspen 

 mountain, to the southwest of the town, the rocks strike north and 



south and arc broken into blocks by a series of north and south faults. 

 Along Spar gulch, in which rich ore was first discovered, the Strata 

 bend in Strike to the northeast, and continue in this direction across 

 the valley into and beyond Smuggler mountain, which is the spur 

 between the valley of Roaring Fork and that of Hunters creek. This 

 port ion is also broken by thrust faults, which run so nearly parallel 

 with the Stratification of the steeply dipping beds that they are diffi- 

 cult to trace. 



The principal mines are in Aspen and Smuggler mountains, overlook- 

 ing the town on either side, but rich developments are found for many 

 miles along the horizon of the Lower Carboniferous, both north and 

 south, always within a few hundred feet of the underlying Archean. 

 The production of the region has been from $6,000,000 to $8,000,000 per 

 annum for some years, but is now (1891) increasing. The Mollie Gibson 

 mine on Smuggler Mountain has a most remarkable body of nearly pure 

 polybasite, from which dividends are being paid at the rate of $100,000 

 per month. 



GLENWOOD SPRINGS TO LEADVILLE. 



ITINERARY. 



By 8. !•'. Emmons. 



Station. 



Distance. 



Elevation. 



Station. 



Distance. 



Elevation. 



Miles Kil °- 

 BUie8, meters. 



Feet. 



Meters. 



Miles. 



Kil... 



meters. 



Feet. 



Meters. 





5, 707 



ii mi 



1,758 

 1,860 j 

 1,871 | 

 1,928 



A \ mi 



54 

 60 



65 

 67 



87 



;i7 

 io:» 



loR 









10 lti ' 



Minturn 



Root; Creek — 



Bed Cliff 



Pando 



7,809 

 s. 289 

 8, 656 



ft 'W7 



2 380 



Dotsero 



L8 29 6,189 



25 41 c, :iiii 



2, 527 



2, 638 

 2,812 



3, 175 



:t 984 





Sherwood 



WolCOtt 



32 52 ; 



4d 04 

 43 09 



17 70 ; 





74 119 



6,886 



2,099 | 



Tennessee Pass . 

 Kii ldar 



88 184 10,418 



142 9,955 



90 ur, in .Irs 



Allenton 



7,129 



■_'. 17:; 



Lead villi'* 



3 104 











' 





* Population 11,212. 



From Glenwood for 12 miles the road follows a narrow canyon cut 

 by the Grand river in the Lower Paleozoic and Areliean rocks at the 

 southern base of the White River plateau. This canyon, which is 

 bounded by vertical cliffs weathered into picturesque castellated forms, 

 reaches a depth of 3,500 feet, the White River plateau immediately 

 north of it being 5,000 feet above the river bed. 



