260 WYNNE : GEOLOGY OF KUTCH. [PAET II. 



At a short distance beyond this a strong bed of the laterite restSj as 

 usual in this part of the country, upon the trap. 



The lateritic band strongly marked by its red colour extends 



eastwards with a southerly inclination frinffing 

 Murcbimaua, _ o o 



the trap hills, the upper flows of which have a 

 similar dip of 5°; these inclinations changing to the south-east on 

 entering the narrow portion of the Mhurr valley. 



(Mkurr). 

 The upper part of the Mhurr valley presents some of the most 

 complicated ground in Kutch. 



In the neighbourhood of the town a fault or faults occur, placing 

 some of the rocks in unexpected position, and the sub-nummulitic group 

 overspreading the more open portion of the ground passes through 

 a narrow opening between the trap hills and extends beyond the limits 

 of the valley towards the north-west. 



This group rests here, partly upon the traps and partly upon 



the underlying Jurassic beds. Its relations to the 

 Sub-nummulitic group. 



different rocks upon which it lies, in the distant 



localities of Eastern and Western Kutch, are brought into close proxi- 

 mity, and at a first glance its unconformity to both would seem to be 

 established. 



This, however, is not borne out by closer inspection, for the upper 

 group is found to show as much conformity to the traps as usual, and 

 necessarily as much unconformity to the Jurassic rocks as they do. 



Supposing the whole of these sub-nummulitic rocks absent, the 

 traps would be seen to rest upon an old Jurassic surface of considerable 

 irregularity with as tortuous a boundary perhaps as elsewhere results 

 from denudation ; or they might have disclosed an inlying protuberance 

 of the lower rocks surrounded by the traps, which would appear to have 

 had a very unequal thickness in this locality, : 



( 260 ) 



