Sec. 11.] 



DETAILED DESCRIPTIONS. 



163 



West of Kavkunpoor the ash beds are seen for a considerable dis- 

 tance, dipping more sharply than usual towards the cretaceous rocks, the 

 boundary of which continues steadily to the south-west as far as the 

 village of Suriwasan. There the sandstones dip sharply away from the 

 trap. If the north boundary of the cretaceous beds were a fault, with 

 the downthrow to the north, a reversal of both these dips might have 

 been anticipated. The present dip is somewhat as in Fig. 15 {a) 



(Fig. 15). 



whereas, with a fault, something of the kind shown in (b) might have 

 been expected. 



If, as appears probable, the whole inlier is merely a mass of un- 

 denuded rock, the adjacent portions of the beds having been removed 

 in pre-trappean times, this is the most marked case of unconformity 

 Jbetween the traps and the cretaceous beds which has been observed. 



The rocks seen in ascending order in the Kurro are the following 

 from north to south : — 



1. Altered sandstone close to tlie junction : 



2. Ferruginous gritty clay, somewliat resembling laterite : 



3. Sandstone. — The dip of tlie above, wbich are very ill seen, is about 



S. 20° E. TJpon tbem are tbe following; tbe sequence was not 

 sufficiently consecutive for measurement : 



( 325 ) 



