THE TRANSITION SERIES. 



47 



quartzites associated with the traps in the ridge are epidotiferous, but 

 these are not necessarily in contact with the trap. 



In the field, and for long after the survey, I was much inclined to 



consider that the rocks between the northern half 



well separated from the of the Kaluvaya ridge and the Veligondas were 



Veligonda beds. . a j gQ Q j ^ e same series, but on a thorough review 



of all my notes, I am compelled to give this point up and accept the 

 suggestion often urged by Charles Oldham that the gneiss series is really 

 continued in this direction. The rocks are certainly more schists than 

 slates, the latter being essentially characteristic of the Cuddapah clayey 

 strata, and they are associated with hornblende schists which must be 

 considered, in this field at any rate, as belonging to the gneiss series. 

 The most important point, however, is, that while the Kaluvaya ridges 

 are continued on the north bank of the Penner, the apparent Cuddapah 

 facies of the rocks between Kaluvaya and the Veligondas is not at all 

 so marked in that direction. 



At the same time I do not put forward the boundaries of this part 

 of the field as hard and fast lines, for there is no doubt that many thin 

 and long outcrops of compact waxy quartzites and even some conglome- 

 rates do occur alongside the Gelacapud and Kaluvaya areas, which I 

 could not but look on as true Cuddapah strata, and which, if so settled, 

 would narrow the belt of gneiss between the Veligondas and the outly- 

 ing ridge of transitions very considerably. 



On the north bank of the Penner, the low ridge of Varaguntapad is 

 Continuation of the of Cuddapah quartzites, which are carried on to 

 SncTXmable *lT tiE and form the lon £ eastward-sloping back of the 

 2 neiss - Bommavaram hill or Dargadevi Konda, whence 



they are continued, with intervals of plain and covered-up ground, in 

 the Yerakonda ridges. 



These beds are now beginning to cap the hills, giving grand scarps 

 on nearly all sides, but particularly to the westward, and they are more 

 evidently unconformable on the schists. At the same time, the eastern 

 boundary, which is probably a faulted one, is hidden under the talus of 



( 155 ) 



