SEC. 10.] NORTH--WESTEUN KUTCH. 247 



east, some disintegrating marly beds, which are highly fossiliferous, pass 

 downwards into the nummulitic zone in the followino- manner : — 



] 0. Calcareous rubbly beds with Fecten, BeJiinanthus profundus, 



thorny spines of Echinus ? Palceocarpilius, and a large 



globose crab, Palceocarpilius rugifer, Stol. {See Pal. Indica, 



Series vii). 

 9. Pale yellowish marl disintegrating into fine powder, with small 



Nummulina, Conoclypeus Flemingii, a few Fectens, <^c. ... 2 

 8. Clay shales with impressions and casts of small thin bivalves ... 1 

 7. Yellow earthy marl disintegrating, full of Operculina 1 small, 



with some larger Nummulites and Bcldnanthus ... 3 to 4 



6. White nummulitic marl weathering into powder, with 



Fectens, S^c. ... ... ... ... 4 



5. Argillaceous shale, with casts of fuci ? shells of Fectens and 



corals ... ... ... ... ... 3 



4. Calcareous marl crowded with large, flat, and small smooth 



Hummmlites CN. exponens, Sfc.J, also Fectens ... ... 6 



3. Dark griiy, soft sandy bed with Nummulites, mostly small 2 to 3 

 2. White marl made up of minute organic fragments with large 



? Serpula tvibes ... ... ... ... 2 



1. Passing down into white nummulitic rocks with Nummulites, 



Fectens, Ostrea, corals iu large lumps, large Echinoderms 



sparingly. 



Eastward, towards Booda, a deserted village on the most westerly 

 „ , , extremity of the traps, the barren plain of the 



Gypseous shales near •> ^ ' J- 



^°°'^''' nummulitic group begins to rise into swelling 



undulations, and where the somewhat indefinite basal escarpment of 

 these rocks conforms to the angular termination of the traps, friable 

 blue and yellow nodular shales and gypseous clays appearing from beneath 

 them with the general westerly dip overlie strong lateritic beds, beneath 

 which come the Operculina marls and shales, as detailed in the section 

 near Nuriaree. The sub-nummulitic band between these and the traps 

 is here obscured by concrete of sub-recent appearance. 



The most westerly exposure of the trap consists of a peculiar crys- 

 talline speckled variety containing much iron and possibly nearly 

 associated with the lateritic rocks. 



2/i ( 247 ) 



