KADAPA SEEIES. 47 



quartzite, and above this are chloritic and micaceous schists of dark green 

 colour and coarse texture, which form the central mass of the mountain 

 rising out of the rudely elliptical synclinal basin, and surrounded by a 

 broad lip or margin of the lower quartzites, as shown in the section, 

 fig. 2, page 14. The summit of the mountain is formed by a capping 

 of younger quartzite. A small, but very conspicuous, outlier, consisting 

 of the lower beds of the basement quartzites, caps the high hill rising 

 about a mile south of the mountain. 



A northern extension of the older quartzites occurs on the eastern 

 side of the Tungur (Toongoodoor) pass, about 10 



Gali Konda paten. 



miles to the northward 1 . Here a remnant of the 



(local) basement quartzites has been left, abutting with its left or western 



side against the quartzites and slates here forming the mass of the 



Vella Kondas. There can be no doubt that, as already pointed out 



(page 11), the great line of fault, by which the Kadapa basin is abruptly 



bounded along the eastern flank of the Vella Kondas, passes along the axis 



of the valley lying between the lofty spur formed by the eastern edge of 



the patch of basement quartzites and the slope of the mountains locally 



distinguished as the Gali Konda (Gauly Conda). 



The basement quartzite dips westward, while the quartzites of the 

 main range dip eastward, and thus appear to form an ordinary synclinal • 

 in reality, however, the quartzites of the western slope occupy a consider- 

 ably higher position in the Kadapa series than does the basement 

 quartzite, and the synclinal valley is, therefore, not an ordinary one, but 

 one with unconformable sides. 3 The basement beds thus constitute an 

 outlying patch de jure, to which I will give the name of the Gali Konda 

 patch. 



1 By some oversight this outlier of basement quartzites has not been shown on the 

 map accompanying Mr. King's memoir with the same colour as the Udayaghiri and Baira- 

 wudi Konda outliers, though unquestionably of the same age. 



2 I could not examine this valley nearly as closely as I could have wished, owing to 

 the extremely rugged nature of the country at foot of the mountains, which compelled me 

 to camp at a great distance from the gneissic boundary. 



( 47 ) 



