BETWEEN THE SON AND THE BANAS. 115 



The history of deposition indicated by this section shows an old 

 land surface traversed by a valley of 700 feet in 

 depth, on whose bottom a stream of torrential 

 nature formed a deposit of coarse conglomerate. Then by a change 

 of level or of the volume of the stream the conditions of deposition 

 changed and the valley became filled by a fan of local debris, which 

 in its turn gave way to, and was covered by, a widespread deposit of 

 sand under which the original irregularities of the surface were 

 covered up. 



A short way further east of this section conglomerates are largely 

 developed in the section along the stream which flows down from 

 the Kharara village and descends to a low level. It is possible that 

 there may be another old valley here, but the fan deposits are 

 wanting, and it was not possible to determine whether the descent 

 of the boundary was not due to disturbance. 



The eastern termination of the outlier is composed almost 

 entirely of white sandstone, frequently contain- 



Eastern end of outlier/ . if r . , . 



ing numerous small fragments of white vein 

 quartz, and usually more or less felspathic, or at times containing 

 distinct grains of felspar. West of Sejari, the lowest beds seen in the 

 scarp contain numerous boulders as large as a man's head, many 

 being of bright-vermilion coloured jasper. The rock is very like 

 some of the basement beds of the lower Vindhyans as seen about 

 five miles to the north-west. There can be no question of the 

 identity of the two, however, for it is just at this point that the rocks 

 of the Kharara outlier are found resting in absolute unconformity on 

 the eroded edges of upturned strata of lower Vindhyan age 

 (see Fig. 9). 



r^ 



Fig. g. Section through east end of the Kharara o u tlier. T, transition ; R, red shale 

 series; Vb, basal stage ; Vp, porcellanite stage ; Vu, upper Vindhyan. 



» 2 ( us ) 



