1S8 BT.ANFORD : GEOLOGY OF WESTERN SIND. 



mostly derived from the Gaj limestones. Below the conglomerate, the 



same calcareous and arenaceous rubbly earth is found as was noticed 



north of Karachi. 



The Malir valley, like that of the Lyari, is covered with subrecent 



gravels and rain-wash. To the eastward the 

 Malir. 



Manchhar beds re-appear, and thence to Darbeji 



railway station, it is very difficult to draw any line of division between 

 Gaj and Manchhar this g rou P and tne underlying Gaj, the two form- 

 beds east of Malir. ations passing into each other, and bands of Gaj 

 character, and containing Gaj fossils, being interstratified with the Man- 

 chhar beds. The rocks east of Malir station are clearly Manchhar, 

 although marine beds occur amongst them. Two or three miles farther 

 east, fine soft silty sandstone, greenish-grey and light-brown in colour, 

 is seen, occasionally with harder calcareous bands intercalated, and some- 

 times obliquely laminated. In the hilly ground to the north-east, near 

 Saj Takkar, lower beds occur ; they are rather coarser sandstones, 

 grey or brownish-grey in colour, and calcareous, containing imperfect 

 casts and fragments of shells, chiefly Gasteropoda, amongst which a 

 CeritJiium like C. telescopium {Telescopium fnscum) and an imperfect 

 specimen of C. subtrochleare , a fragment of Ostrea multicostata (the 

 closely ribbed variety), a portion of a long narrow oyster, a globose 

 Anomia, a minute Pecten, and fragments of Balanus, were found. 



Soft silty sandstones (Manchhar) occur both below and above the 

 fossil bed ; those below are highly micaceous. The dip near Malir is 

 westward, but at Saj Takkar it becomes south. Farther to the north- 

 east undoubted Gaj beds crop out, containing tubes of Kuphus, &c, 

 and the Kattiani hills in the same direction are of rubbly limestones, 

 more or less sandy, with quantities of coral. These rocks are in fact a 

 continuation to the southward of the Khadeji beds already described. 



( 183 ) 



