SON PLATEAU. .M 1 



given above. The greenish sandstone and shaly zone No 3 appears 

 to pass into the light-coloured top beds of the purple sandstone, nnd 

 has lost all the characters which in its upper part to the eastward 

 indicate the last extension of group No. 4. 



In the carboniferous group, which has here assumed considerable 

 proportions, the thickness of different very distinguishable zones varies 

 much, the stroug limestone bands of some places appearing of much greater 

 thickness than in others. These strong bands are often cherty or crin- 

 oidal, and vary from thin-bedded or lumpy to thick solid limestone ; 

 the associated greenish, variegated, pale pink, coarse, or ferruginous 

 sandstones are evidently inconstant both in place and character. 



A great mass of the nummulitic limestone has slipped down the 



cliff on the south-western side of this Katta hill, and 



on the spurs below the " purple^^ and " speckled^^ 



sandstone groups are seen divided by the shaly zone No. 3, a little of 



the red salt-marl appearing here and there below all in the smaller glens. 



Other slips occur in the deep limestone valley west of Arara, and 



among the debris lying heavily at the base of 

 Coals. 



its enclosing cliffs. There are one or two small 



slipped exposures of the coaly shales below the nummulitic rocks ; two 



thin coal seams occur in these. The group beneath the carboniferous 



does not run far up this glen, but holds on westward into the northern 



side of the Sangal Wan"^ greatly covered with debris and obscured by 



land-slips along the cliffs : all the larger local groups are, however, seen. 



In the Sangal Wan, west of Katta, there is evidence of both 



disturbance and dislocation. On its left side 

 Sangal Wan valley. 



the purple sandstone and superior groups show 



themselves, but on the right, at its mouth, is a mass of white, 



splintery, compact carboniferous limestone, forming a horizontally bedded 



f 



* Tliere seems to be rather a confusion of ideas as to where the Sangal (or Sungle)' 

 Wan really is. Its name is not marked upon the map, and the glen so called by natives of 

 the country is not that west of Arara, but an east-and-west gorge nearly two miles north of 

 NalL 



( 211 ) 



