MURPHREEV VALLEY; ECONOMIC GEOLOGY. 41 



The Clinton is very prominently exposed in this valley. 

 It constitutes the cap, or top member of the Red Mountain, 

 the whole length of the valley, and it occurs in more or less 

 broken sections, also on the south-east side. The Red Moun- 

 tain standing as it does towards the north-western side of the 

 valley, with its strata dipping north-west, gives generally on 

 its south-east face an exposure of the whole thickness of the 

 Clinton formation. From this face it dips at an angle of 18 

 to 20 down the north-west side of the mountain and beneath 

 Sand Valley. 



DETAILS OF OCCURRENCE OF RED ORES. 

 Xorth- western Side of the Valley. 



To give a consecutive description of this formation, we 

 begin near the head or upper end of the valley, at the end 

 of the eastern curve of Red Mountain. At G. B. Wade's, in 

 the north-west quarter of S. 1, T. 11, R. 4, east, about 200 

 yards south of his house, and close to the Walker Gap branch 

 of Bristow's creek, the Black Shale was seen, dipping north- 

 west 75 or 80; about 50 feet west of it a bed of yellowish 

 clay, and other strata indicating the Clinton formation. 

 Three-fourths of a mile north of Wade's, in the south-west 

 quarter of S. 36, T. 10, R. 4, east, at Mr. Boyd's, are several 

 small openings in two seams of red ore, the cuts sufficient 

 only to expose the tops of the seams. The eastern one sandy, 

 dark ore, resembling the lower bed; the western one better 

 ore no fossils seen. The dip of the ore as seen in the cuts 

 is nearly vertical, say 85 north-west. 



One hundred yards or so, north of these cuts, the same 

 seams of ore were seen in the road trending west of north 

 and nearly vertical, and apparently dipping down ward beneath 

 a ridge of Sub-Carboniferous Chert which begins at this 

 point and lies to the north east. This ridge rises to a height of 

 200 feet and is composed wholly of Sub-Carboniferous Chert 

 with its characteristic fossils. The Black Shale was not seen 

 in the ridge ; but its position is very clearly indicated by its 

 usual accompanying fecks. These rocks stand mostly vertical, 

 some dipping perceptibly east by south, others west by north. 



