coal. 333 



strikes about X. 31 ° W., and dips to the westward (overturned) about 80°. 

 It was opened l>v a shaft 90 feet deep. The mine has long been abandoned. 



Between the Mount Carbon and Golden coal districts the Laramie 

 measures lie in the southern half of the great inward-sweeping arch 

 resulting from the Grolden unconformities. Although the strains to which 

 the strata, both here and along the northern half of the arch, were sub- 

 jected in the general uplift of the range and the concomitant adjustment 

 of the beds were doubtless considerable, but slight fracturing resulted. 

 The coal horizon may easily be traced from surface particles and from the 

 frequent comb-like outcrops of either the Laramie sandstones themselves 

 Or the conglomerates and sandstones at the base of the Arapahoe a few 

 hundred feet to the east. From the succession of strata and from the thick- 

 ness ami character of the sandstones occurring west of the coal, it is prob- 

 able that the seams formerly opened along here belong to the horizon 

 between sandstones Band*'. 



Leaves and other plant remains occur in abundance. 



GOLDEN DISTRICT. 



General description. — This district includes the Old White Ash. LoVelalld. 

 New White Ash, Golden Star, Excelsior, ami Rocky Mountain 1 and 2 

 mines. It occupies the valley of Clear Creek and its tributaries directly 

 west of the Table Mountains. The strike, for a long distance south of 

 Clear Creek, is N. .'!<• to .'!."> ■ W.; north of the creek it rapidly curves to 

 X. 7 .')<>' E., increasing to X. 17° E. in the vicinity of the Ralston mine. 

 The measures have a dip at the surface of between 65° and 80° westward. 

 reaching vertical at a depth of between 7i»() and 900 feet. Below this 

 depth their dip is eastward, lessening in amount until probably between 

 1,200 and 1,500 feet the beds have assumed the gentle dip underlying the 

 eastern portion of the valley and the Table Mountains. 



The distance on the trend of the strata for which the measures are 

 productive is difficult of approximation, but, with short interruptions, is 

 probably 1 mile south of Clear Creek and 3 miles north of it, reaching in 

 the latter direction to the disturbed area just north of Van bibber Creek. 

 In depth, the beds undoubtedly hold their width far beyond the limits of 

 economic mining 1 . 



