248 GEOLOGICAL SURVEY OF THE TERRITORIES. 



toward the soutliwest. There are included fragments of limestone and 

 quartzite noticed in some places. The last bed of limestone has a dip 

 to the southwest and inclines at an angle of 65'^. About two miles 

 farther down the river, at the mouth of Dead Man's Gulch, the dip is 

 again north, or a few degrees west of north. At the head of Dead 

 Man's Gulch, and between Taylor River and Cement Creek, are two 

 points, stations 72 and 73, which we ascended fr'om the valley of East 

 Eiver. On the ridge running southwest from Station 72, which is the 

 most western of tJie two, the first rocks met with were sandstones 

 flipping north 75° west, beneath which was a bed of limestone dipping in 

 the same direction at an angle of from 5° to 10°. We next passed over a 

 saddle, beyond which are irregular structured pink and white mottled 

 limestone, containing fragments of fossils like those we found in the 

 Silurian layers in Glen Eyrie, east of the foothills. Indeed, the beds bear 

 a very close resemblance to them, and I have but little doubt that they 

 are of the same age. The dip here is north 55° west, at an angle of 

 from 5° to 10°. Below the beds just given are quartzites which rest on 

 reddish granites. On the station itself we have limestones and quartz- 

 ites, in too much confusion, however, to make a very complete section. 

 The lowest exposure is a coarse quartzite, above which is a band of very 

 black limestone, Jiinty and containing pebbles. This is from 3 to 4 feet 

 thick. I^ext is a light yellowish limestone, followed by a brownish-gray 

 limestone, above which we find dark-blue limestone. The dip on the 

 western side is toward the northwest. This changes toward the north 

 until it becomes northeast : the angle is 10°. There is also a change to 

 the south and southeast, where we find the dip to be south and south- 

 west, and the angle 25°. The station has a broad top, and is 11,862 feet 

 above the sea-level. On the ridge, between stations 72 and 73, the dip 

 of the beds is east of north, and the angle 15° to 20°. We have here 

 about 60 feet of white limestone and then about 40 feet of reddish quartz- 

 itic sandstone. These beds, 1 think, belong immediately below those 

 seen on station 72 and above those seen on the ridge we ascended. 

 At Station 73 we have the following beds : 



1. Irregular spotted limestone ; general color, gray. The lower portion 



is very compact, and full of purple spots. It contains, also, on the 

 weathered surfaces, fragments of crinoidal stems and corals. The 

 thickness I estimated at about 20 feet. ' 



2. Soft white-purple spotted sandstone, about 8 or 10 feet in thickness. 



3. Light-gray limestone ; very compact,«especial]y above, where it is also 



somewhat laminated ,• and on the surface, weathers red. Its thick- 

 ness is from 30 to 40 feet. 



4. Irregular gray limestone, with large flint nodules and pebbles. This 



is at the upper part of the bed ; could not get at the lower part, 

 which is probably like that I have referred to above on the first 

 ridge we ascended j could not give the thickness. 



5. Quartzites and sandstone 5 thickness not estimated. 



6. Mica schist; below this bed we have rose-colored granites. 



These are the extension of the granites in the caiion of the Gunnison 

 Eiver, and they reach to the westward and southwest toward East River 

 to a line of trachyte rock. Along the creek heading under Station 

 73 and flowing into East River, there were several exposures showing 

 the bedding of the granite very distinctly. The dip was about north 75° 

 west, at an angle of from 55° to 60°. From the station we could over- 

 look the caSon of Taylor River, which seems to be very rugged and cut 

 through the granites. From Station 93 the line of outcrop of the 



