Ibi WYNNE: GEOLOGY OF KUTCH. [PART II. 



For the first 3,800 feet of horizontal distance from No. 30 north- 

 wards, the rocks, there on edge, are not well exposed, though frequently- 

 seen to the east of the section line. As they are either vertical or 

 contorted, the evidence of thickness which they afford carries with it 

 some amount of doubt. Although the thickness given, however, may 

 be excessive, the rocks must still have a very considerable bulk, and they 

 certainly are not repeated in the section above detailed; from which the 

 lower group of the jurassies of Kuteh would appear to have a depth much 

 exceeding 3,000 feet. The aspect of the beds occasionally recalls that 

 of the Bela group, but the shales and sandstones from Nos. 24 to 30 

 are unknown along the Putehum, Kurreer, and Bela range, and the 

 fossils, although to some extent similar, have, as an assemblage, a 

 different aspect. Ammonites here being much more frequent, contain- 

 ing some of the largest varieties found in Kutch, and including Ammonites 

 (PAi/Uoceras), Lodaiense, Waagen, mss., A. (Peltoceras) perarmatum. 

 Sow., semirugomm, Waagen, mss., bidens, Waagen, irss., A. fStepkano- 

 cerasj macroceplialum ? Perisphinctes, of various species.* 



Besides these also occur two species of Pleurotomaria of the type 

 of P. Agathis, Astarte compressa, Vnicardiiitn, sp., Niicula ciineiformis, 

 Ctenostreon pectiniforme, Ostrea MarsJdi, Pholadomya inornata of 

 Sowerby, &c. 



The eastward inclination of the anticlinal axis indicates the occur- 

 rence of lower beds to the west ; these crop out of the sides of the 

 ravines from the HuUaman summit, but consisting largely of perishable 

 shales weathering away, they have overrun the slopes, leaving protu- 

 berances on the hill sides, marking the places where harder beds at wide 

 intervals are concealed beneath. Where seen, these lower shales have a 

 rao-o-y look, weathering of an oehreous colour with thin sandstone and 

 calcareous layers, some of the latter being crystalline and full of broken 

 shell fragments. Their thickness in excess of the above section is 

 roughly estimated at 300 feet. 



* These mss. names refer to a detailed Monograph on the Ammonites of the Kutch 

 teds, by Dr. W. AVaagen, now iu the press. — T. 0. 



( 154. ) 



