THE LAKI RANGE, ETC. 151 



On the rises north of Jhirak, many corals occur in a dark-coloured 

 conglomeratic band above the upper limestone. This band contains 

 fragments of argillaceous limestone bored by P/ioladida, and in places it 

 abounds in rnollusca. One highly fossiliferous locality is a small hillock, 

 close to the road, 2| miles north of Jhirak, and £ mile south of the spot 

 where the road branches off to the Meting Railway Station. 



Along the western side of the old road from Hyderabad and Kotri 

 to Karachi, west of Jhirak, there is a low scarp of nodular Alveo- 

 lina limestone, white and yellow. This closely resembles a Khirthar 

 bed, but above it to the westward there are dark-coloured marly and 

 sandy strata, belonging apparently to the Ranikot group. The road just 



mentioned runs along the north-western bank of 

 Sunehri Dhandh. . 



Sunehn Dhandh, 1 a lake of some size, about 9 



miles west of Jhirak, and on the road from that town to the Jhimpir Rail- 

 way Station. North of the Dhandh there is a ridge of nodular reddish and 

 yellow Alveolina limestone, which crosses the Karachi road, and west of 

 the Dhandh is the pale coloured limestone previously noticed as forming 

 a low scarp. The last named rock is associated with marly bands, also 

 containing Alveolina, and rests upon a dark-brown earthy bed containing 

 a harder arenaceous layer. Below this are yellow marly impure lime- 

 stones impregnated with salt, and containing Nerita, the small variety 

 of Nummulites spira, called Operculina tattaensis by Dr. Carter and other 

 nummulites. Next in descending order comes the ferruginous black 

 sandstone, purple shales, and other soft brightly coloured beds, which 

 are seen in several places along the bank of the dhandh, and are 

 doubtless the same as those observed to the northward near Meting 

 and representative of the ferruginous beds of Bandh Vera and Lain- 

 yan. At Sunehri Dhandh the iron beds are of considerable thickness ; 

 they contain some hsematite, red and brown, and they rest upon white 

 sandstone. 



1 " Dhandh," a marsh or lake, jhil in Hindi. An old Musafir-kkana on the north-west 

 bank of the Dhandh is marked on the accompanying map, and the lake itself is indi- 

 cated, but not its name. 



( 151 ) 



