140 KHASl flILLS. 



forces which produced the excavation in the limestone must have 

 continued in operation during a portion at least of the time occupied 

 in the deposition of the sandstones above. The surface of the limestone 

 has been subjected to a wearing action of a similar kind, but in a 

 slighter degree, in several other places closely adjoining (see Fig.) 

 It is therefore clear that while all the organic remains contained in 

 the limestone point to its marine origin, although under no great depth 

 of water, the occurrence of the imbedded patches of coal in its upper 

 beds, and of the small and isolated pieces of coaly matter filling 

 up the hollows on its surface, and the peculiar way in which it has been 

 excavated as by a running stream, combine to show that it must have 

 been brought to the surface and subjected to sub-aerial forces prior to 

 the deposition of the overlying sandstones. 



Eesting immediately on the limestone which we have just described, 



there is a group of alternating beds of sandstones, 



°^ ' ' shales and coal, which form the uppermost beds 



of the small ridge in which they occur. The section is as follows, under 



the surface : — 



ft. 



Earthy sandstone beds, covered with jungle ... 



Sandstone slightly tinted red 



Shaly sandstone whitish and grey 



Sandstone, earthy and ferruginous, with concretions 



of ironstone 



Grit, free and open grained, softer towards top 



Sandy shales, thin-bedded 



White grit, sharp and angular, no cement 



Coal 



Shale greyish-black with fragmentary impressions of 



vegetable remains 



Sandstone, hard, ferruginous and nodular 



6 







1 







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2 



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1 



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2 







