THE GNEISSIC SERIES. 31 



of very vitreous-looking quartzites much split up by jointing and con- 

 torted. In the south-west side of these beds is an outcrop of jaspery 

 quartz-rock with epidote. In the stream between Dasur and Purvati- 

 puram there are schistose quartzites. Further south- south-west and 

 to the south of Kumarigunta., these seams or beds of quartzite are 

 intercalated with talcose and chloritic schists. Between this and 

 Tummulatulapuru very little rock is seen owing to the superficial 

 coverings, except in the beds of the larger Ingoort nala and that 

 south of the first village, where occasional interesting sections are 

 exposed of the clear association of these quartzites with the schistose 

 gneisses. In the nala south of Tummulatulapuru beds of quartzites 

 Waxy quartz-schists, and gneissoid rock are continued past and due 

 rippled ' west of the village, and close by here is a band 



of pale -blue and grey waxy quartzite, which is slightly rippled. As 

 this belt is followed south-east, we again pass from the more compact 

 and quartzite forms of this rock to varieties approaching the Narasim- 

 hakonda type. 



To the westward of Turamulla there are two rocky ridges composed 

 Close similarity to the of beds of wni te grey and greenish waxy-look- 

 Cuddapah beds. ing . quartzites, associated quite conformably with 



the schistose gneisses. These are as like quartzites of the Cuddapah 

 series as possible, the only difference being that they are, if anything 

 more crystallized and sugary-looking. They are distinctly laminated 

 and occasionally false-bedded, but there are no signs of conglomer- 

 ates or pebble beds. The continuation of these same beds shows 

 east of Tummulatulapuru, when they are still exceedingly like trans- 

 ition beds, while they are furrowed slightly on the bed surfaces 

 either as ripplings, or as crumplings from lateral squeezing, the furrows 

 being long and parallel to each other, though they also run into each 

 other after the manner of ripplings. 



Lastly, at the southern end of this band, there is a remarkable case of 



variation in the style of these quartz-schists in a 



Conglorneratoid gneiss. 



very obscure case of an apparent conglomerate. At 



( 139 ) 



