242 WYNNE : GEOLOGY OF KUTCH. [pART II. 



full of TurrHella, &e. A lumi^y lateritic bed overlies tliese, and is suc- 

 ceeded by tbe uummulitic marls and marly limestones. 



Northwards from this place is the conspicuous elevation called 

 Baboa hill, having a height of about 130 feet 

 above the neighbouring stream, towards which it 

 presents its steepest side, though everywhere almost precipitous in conse- 

 quence of its bearing a thick capping of hard limestone. 



This hill was erroneously supposed by Colonel Grant to have been 

 locally elevated in consequence of the occurrence of some basalt in the 

 river to the west. The structure of the ground is simple, the hill 

 being formed by denudation, and the basaltic rock, of which but little 

 is seen, most probably is a portion of the stratified trap which may 

 fairly be presumed to underlie this country.* 



The following section occurs in the river just beneath the hill : — 



Descending obdee. 



i?e(f« nearhi horizontal. 



Ft. 



f 5. Brown and yeUow veined carbonaceous shales ... ... 4 



4. White, concretionary pseudo-trecciated, saline, aluminous root 



SUB-NUMMU- j (? Lithomarge) ... ... ... ■•• 12 



^'"^^°' I 3. A wliiter bed of similar character ... ... ... 2 



I 2. Spongy, hfematitic bed :.. ... ... •■• 2 



Steatipied 1 J Concretionary basaltic trap ... ... - H 



TEAP. J 



A mass of greenish, rudely columnar, and partially concretionary 

 basalt neaily at the same level as No. 1 continues northwards, with 

 an irreo-ular upper surface underneath the white argillaceous beds. 



* Colonel Grant may have been misled by finding the nnmmulitic beds of the 

 hill at a higher level than those in the adjacent plain. This is accounted for by the 

 northerly dip of the beds in the plain on that side of the hill being a portion of some 

 general undulations which affect the whole country. 

 ( 242 ) 



