Chap. 9.] w. blanfoud, western india. 47 



or shaley and occasionally calcareous. The only fossils are a few bivalves 

 too ill preserved for identification. These sandstones are about 80 to 

 100 feet thick. As before noticed^ oione of the Bagk fossils have been 

 ohtained from these rocks. 



This Bagh section, although very imperfect, exemplifies one charac- 

 Prevalence of lime- "^^^ °^ *^® 'Ba.gk beds, which is pretty constant, 

 stone in topmost beds. ^^^ general tendency to a prevalence of limestone, 

 more or less pure, towards the top and of sandstone below. To the west- 

 ward the mass of the rocks consist of coarse sandstones and conglomerates, 

 frequently calcareous above, becoming at times a gritty Kmestone, or else 



capped by shales, more or less calcareous. In the 



West of Bagh. 



most westwardly portion exposed, where the deve- 

 lopment of the beds generally is greater than elsewhere, these shales 

 sometimes attain a great thickness. In the Deva valley amongst the Raj- 

 peepla hills, they attain to as much as 500 feet in one place near Doom- 

 khul. Beneath them are coarse compact gritty sandstones of at least 

 an equal thickness. Where the rocks are thin as at Ruttunmul and 

 near Kanas only conglomerate and coarse sandstone is met with. These 

 conglomerates and sandstones are not only calcareous, but frequently also 

 cherty towards the top, that is, near their junction with the traps. 

 Masses of chert (noncrystalline impure silica), frequently as much as 

 2 or 3 feet in diameter, occur in them. The same is sometimes but less 

 frequently the case with the uppermost shales. 



East of Bagh a change takes place in these beds, and here alone is 



East of Bao'li— coral- found the " coralline limestone,"^ which from its 

 hue Umestone. employment in the now-ruined buildings of Man- 



doo first attracted notice to these strata. This limestone is red or yellow in 

 colour (the former colour apparently being the result of exposure); it con- 

 sists mainly of fragments of hryozoa, shells, &c,, which are not easily 

 recognised on a fresh surface, but weather out upon exposed blocks. 

 The fresh surface has a somewhat granular mottled appearance, which is 



( 209 ) 



