MUKPHREE'S VALLEY ; ECONOMIC GEOLOGY. 81 



1 W., on the lands of Reuben Little, the Clinton Ridge is 

 abruptly thrust up again to the height of 150 feet, for a dis- 

 tance of half a mile. About fd of its length on the N. E. 

 end is wholly composed of Lower Siliceous Chert. The 

 other end wholly of Clinton Strata, carrying a large amount 

 of good iron ore. An opening into a seam of ore on the top 

 of the ridge showed a N. E. dip of 80. At other openings 

 the dips were different, and much less, some slightly to S. 

 E., others to the N. W., while the strike of the seams is 

 across the ridge, or from S. E. to N. W. The S. W. end of 

 the ridge slopes gently down to the level of the valley, and 

 apparently below the level of the Clinton. 



The structure of this solitary ridge is very peculiar, and 

 unique. An explanation of why it presents those features, 

 or an attempt to trace out the dynamic forces that produced 

 this structure, will not in our present state of knowledge be 

 attempted. Our mission now is to trace, and point out the 

 locations of the induscrial materials of economic value, and 

 their development. 



A large amount of good iron ore exists in this little soli- 

 tary ridge, and in j^sition that is available for easy mining, 

 and transportation. On the S. E. side of the ridge a long 

 trench had been cut from the base of the ridge upwards, 

 which showed the following section : 



Section in S. 3, T. 14, R. 1 W. 



Red hematite ore 3 feet. 



Thin shaly sand rock 3 " 



Red hematite ore 17 " 



From the base upwards. 



This ore was all of the same quality and structure, and 

 evidently one bed 23 feet thick, with rocky parting three 

 feet from the bottom, giving 20 feet of ore. 



The ore of this bed is of similar structure and quality to 

 the bed at Hullett's Gap, classed as No. 3, in Sect. 7, of T. 

 14, 1 E. Differing from that only in being of more uniform 

 brown color, and having a greater number of -round grains, 



