238 WYNNE : GEOLOGY OF KTJTCH. [PAKT II. 



or two places over which the sand appears to have travelled, ferruginous 

 and silicious grit, supposed to overlie the nummulitic beds^ occurs.* 



The E,unn-like portions of the shore of the estuary are said to be 

 flooded only during the south-west monsoon, when the sea driven up 

 by the wind helps to iauudate the Runn. 



The nummulitic rocks form a low semi-circular scarp facing the 



stratified trap hill of Bheti over Oomirsir. In 

 South of Lukput. 



the low ground at the base of the nummulitic 



beds some shales appear containing a band of small sized Ostrea Flemingi. 



This passes downwards into the highly ferruginous and gypseous shales 



with nodular bands of haematite, at the base of which are the strong 



laterites wrapping round the flanks of Bheti hill. 



In the Oomirsir valley, the gypseous shales are particularly strong 



and are overlaid by alternations of red, white, 



Oomirsir valley. 



gray and variously coloured ferruginous hsema- 



titic, sandy, and flaggy beds. In none of these beds were fossils met 



with except a few oysters in a gypseous shale north of Oomirsir, and 



about a mile and a half from the locality at which the doubtfully eocene 



forms previously mentioned were obtained. 



In the river which passes near the southern end of Bheti hill, the 



nummulitic beds very nearly approach the trap, 

 South of Bheti hiU. . . 



the strata of both dipping to the south- at low 



angles, and the nummulitic beds being underlaid by 15 feet of unctuous, 



red, and purple mottled clay of the usual semi-volcanic aspect. Between 



this and the trap tbere is a blank space of 50 yards, so that the section 



is incomplete, but at a little distance to the east strong laterites rest 



upon the trap. Just to the westward from 40 to 50 feet of the white 



nummulitic beds are exposed in the river crowded with fossils, among 



which are Schizaster and several other Bchinoderms, Pecten, and Ostrea. 



* In several places in this north-western part of Kutch, both on the shore and 

 at some distance mland, local patches of the shells of Fi/razus palustris were met with as 

 usual, in such a fragmentary state that a single perfect specimen could not be found. 



'( a38 ) 



