326 MINING lEDUSTEY. 



general dislocation of the strata, in those parts where the fractures produced 

 by the first-named forces have not been filled by the intrusion of granite 

 bodies, thus offering a greater resistance to the disturbing forces. 



By reference to the map, Atlas-Plate 13, it will be seen that there are 

 five principal bodies of granite — ^two northern, those of Austin and Geneva ; 

 two southern, the eastern and western Ophir Canon bodies, and a long 

 intermediate or central body. The Geneva and central and eastern Ophir 

 Canon bodies seem to belong to one line of upheaval, while the Austin and 

 western Ophir Carton bodies represent independent lines of elevation. 



The central mass of sedimentary rocks, comprising the double ridge 

 system of Globe, Bunker Hill, and Big Creek Peaks, included between the 

 Geneva and central bodies of granite, forms a general anticlinal fold, whose 

 ends overlap respectively the extremities of those bodies ; here the effect of 

 the longitudinal compression is most distinctly seen, since the axis of the fold 

 has an extreme variation in direction from about north 35° east, on the 

 northern end, to north 20° west on the southern, with an intermediate re-en- 

 tering angle to the east. 



On the north the appearance of the Austin granite seems to have been 

 accompanied by an upheaval of the metamorphic slates of Telegraph Peak to 

 the north, and of the slates and limestones to the south, forming a partial 

 synclinal with the western member of the main anticHnal fold where it rests 

 on the Geneva body of granite. 



The position of the stratified rocks in the portion of the range south of 

 Kingston Canon seems to be mainly due to their upheaval in the line of the 

 granite bodies, which form two generally parallel lines of elevation, repre- 

 sented by the central and western Ophir Canon bodies. 



The elevation of the central granite body represents in the main a mono- 

 clinal uplift, though isolated bodies of metamorphic rock occur on the eastern 

 flanks of this body, whose relations have not been accurately determined. 

 By the continuation of this line of upheaval to the south, in the eastern Ophir 

 Canon body, which is a metamorphic granite, a synclinal fold in the strata is 

 formed between this and the western granite; the western uplift probably 

 extends for some distance north of this body to the limestone on the flanks 

 of the monoclinal. 



i 



