Delhi quartzite series. 



97 



A special feature of the hill is a small bifurcation of the ridge 



Ridge bifurcation at its north-eastern end which opens out 



near Khcrcha ; new towards the village, and in the direction of 



magnet phase. ^ ^-^ ^ ^^ bifurcati(m ^ ^ 



1,085 ft. hill before referred to. The quartzite of the north-western 

 arm of this bifurcation— specimen No. ^ (12397)— descends 

 to within |-mile of the river-bed and then is represented among 

 the shingle of the river by a rocky bed of quartzite identical litho- 

 logically with that of the spur (^—12398, PI. 12, fig. 6). 

 In the plan of the river section (text fig. 17) it will be seen that, 



Fig. 17. 



closely juxtaposed against the Aravalli chlorite-schists, the Delhi 

 Quartzite, which is of a rather dark purplish grey colour and cut 

 through by many wandering iron-stained divisional planes, dips at 

 60° N.W. There is about 500 feet in thickness of this represented, 

 and it is followed downwards in the section by a set of magnesian 

 rocks of a novel and specially interesting character. 



(3) Magnesian Phase associated with the Delhi Quartzite. 

 These magnesian rocks have a bedded appearance that by itself 

 would lead to no suspicion regarding the normal succession were 



