DELHI QUARTZITE SERIES. 



87 



the strike and irregularity as indicated by the zigzag bending of 

 the strike as displayed in the isolated hills near Thuravas. 



The still larger hill-mass at whose south-eastern foot lie Bamna 

 D , •„ an d Punasan, shows a remarkable. curved 



Bamna-Punasan hilL .... ' u 



semicircular strike. The south-eastern edge 

 appears generally, but probably deceptively, to be a scarp, with dip 

 towards the hill as just north of Punasan, — but vertical again to 

 the S.W. and N.E. of this village. In the latter direction beyond 

 Banma, where the strike begins to curve more rapidly, the dip 

 appears to be 50° due east, from which point the strike carries the 

 outcrop following round the northern and north-western ed<>-e of 

 the hill-mass, the dip continuing outwards. 



Near Punasan. what appears to be bedding is somewhat strongly 



indicated by alternate layers of white and 

 Colour-banding in r v ~ , r 



bhe quartette. g^ quartzite of different degrees of massive- 



ness. 



The same aspect is even more markedly noticeable behind the 

 village of Bamna in the little gorge running into the hills. (See 

 section text fig. 14.) Here, great ribs of white, grey, and other 



Fig. 14. 



BAMNA 



E.S. E 



coloured quartzite. of varying grain, appear, as seen in perspective, 

 to be inclined in towards the hill, i.e., N.W., but that the real 

 inclination is not far from vertical is shown by the rocks exposed 

 immediately behind the village. 



Taken in connection with the northern end of this hill-mass, 



where the strike curves round so definitely 

 Brachy-anticlini" or- ,1 , , 1 • • t , , • , -, 



syncline the total >™pression is as of a much restricted 



brachy-anticline. 



