118 BLANFORD : GEOLOGY OF WESTERN SINlJ. 



Tlie bed with the large Echinolampas is interstratified with the brown 



nummulitic limestones of the Nari group. 



A very small patch of Gaj beds, in which Ostrea, Pecien, and 



Placuna occur, is exposed about half a mile north 

 Gaj beds near Cborlo. . 



of the camping ground at Chorlo, on the west 01 



the road to Jhangar. This patch is too small to be marked on the 



map herewith issued. West of Liinda hill the Nari beds are concealed, 



close to the hill itself, by talus and blown sand, and immediately to the 



Ground east of Liinda eastward is a broad torrent bed, filled with pebbles 

 of nummulitic limestone, and no rock is seen in 

 place. To the east of this, Manchhar beds occur, and extend nearly to 

 the foot of the ridge east of the valley ; they appear in places to rest upon 

 Nari beds, whilst in other parts of the boundary, a thin but unmistakeable 

 representative of the Gaj group, ' with its characteristic fossils, intervenes. 

 These Manchhar and Gaj beds are a continuation to the southward o£ 

 those seen in the section at Bhagothoro, south of Sehwan, a section 

 which will be described in the next chapter. 



For nearly 20 miles from the neighbourhood of Chorlo, almost to 



Neighbourhood of Ma- Pokran Landi, in the valley between the Badhra 

 and Laki ranges, no upper tertiary beds occur, the 

 ground being composed of Nari beds with inliers of Khirthar limestone ; 

 and the latter rock occupies the whole, or nearly the whole, breadth o£ 

 the valley at Maliri, 2 the halting place between Chorlo and Pokran. 

 The boundaries between Nari and Khirthar are really much more com- 

 plicated than they appear on the map; but not only is anything 

 like detailed mapping impracticable for want of a better topogra- 

 phical survey, but it is very difficult in this part of the country to 

 determine with precision the limit of the Khirthar and Nari groups. 

 The massive Khirthar limestone becomes much broken up into shaly 

 and marly beds, which are greatly developed in some hills called Dullh 



1 These narrow bands of Gaj rocks are too small to he represented on the accompany- 

 ing map. 



2 Not marked on the accompanying map. It is near the spot called Wand Bira. 



( 118 ) 



