78 WYNNE : GEOLOGY OF KUTCH. [pAllT I. 



D. — The beds which succeed the nummulitie group in different 

 parts of its area are variable and inconstant, Sub- 

 group D being sometimes entirely absent. Where 

 this is found, it is characterised by very irregular and false-bedded sand 

 or friable sandy shales generally white and streaked by iron-stained 

 laminsB. These rest on dun colored and blue finely laminated clays 

 in which only a few fossils, including casts of a small Bonax (?) and the 

 carapace of a very small crab, were found. In the sands above are 

 impressions of several varieties of exogenous leaves. 



Beyond the termination of the nummuhtic beds near Kannai, a 

 very similar variegated sand, or sandy shale with leave3, occurs inter- 

 calated between marine beds of the next su'cceeding sub-division ; it is, 

 however, a very local deposit and soon thins out, but may represent the 

 leaf beds just mentioned. 



The fugitive character and irregular aspect of the group D sug- 

 gested to Mr. Fedden the possibility of an unconformity between the 

 nummulitie beds and the group E, though this was hard to establish 

 owing to the horizontality of all the rocks where junctions are seen. 



Argillaceous group. 



E. — This is by far the most important of the Kutcli tertiary deposits 

 in thickness, extent, and the number and variety 



Argillaceous fossilifer- e -i. s •! a _"j- i, ti.j 



ous groups. ^^ "^ fossils. Among its basal beds are some 



much resembling the upper portion of the preced- 

 ing sub-division, variable and false-bedded on a large scale, but not found 

 to contain the leaves there met with, except in the case just now noticed. 

 Strongly ferruginous or lateritic bands also occur, and this lower 

 portion has in general a rusty appearance. Soft brownish, yellowish, or 

 mottled sandstones with ill defined lamination (or none perceptible) 

 prevail, often characterised by cylindrical, concretionary, ferruginous or 

 white, ramifications or casts of burrows. 

 ( 78 ) 



