SOUTH-WESTERN PORTION OF KARACHI COLLECTORATE. 169 



the southern part of this inlier. The same line of disturbance may be 



traced to the northward in the fault shown on the map near Baili, west 



of Tong (Rath Nath), and also in the intermediate area near Bill, a locality 



to be mentioned presently. Although curving to the westward farther 



north, this line of dislocation has a general north and south direction 



like most of the axes of disturbance in the province. 



The Mol and Miher (Mahr) plateaus, two table-lands of Gaj beds, 



projecting to the northward from the main Gaj 

 Mol plateau. 



area, are each about 1,500 feet above the sea, and 



800 to 1,000 feet above the lower plains of Naribeds from which they 



rise. The Miher plateau will be described in connection with the Habb 



valley a few pages farther on. The Mol plateau lies immediately west 



of the Nari inlier just noticed as occurring near Rahuja and Sawajij 



and is higher at the edges than in the middle, where it is drained 



by the Mol Nai (called Andi Nai 1 in the lower part of its course), 



running southwards to join the Khadeji and other streams that unite to 



form the Malir. The Gaj beds of this plateau assume the form of a 



gentle synclinal, in the hollow of which Manchhar beds occur around 



Thana Shah Beg, and for some distance to the north. They are much 



obscured by sub-recent detrital accumulations, conglomerates, gravels, 



&c, but the latter are easily distinguished by being, as elsewhere, quite 



unconformable to the true Manchhars. 



The Manchhars not only pass into the Gaj beds, but marine fossils 



are found associated with the lower members of 

 Manchhar. beds of Mol. 



the Manchhar group, as is not untrequently the 



case farther south near Karachi. Thus the following section was ob- 

 served at a place called Mean-wari-pani (Neean Waree Panee on 1-inch 

 map), a water-hole in the Drig-jo-doro, about 6 miles north-by- west 

 from Thana Shah Beg. At the base are fine silty soft sandstones, pale- 

 coloured or white, mottled below with shades of pink and ferruginous. 

 These appear to be Manchhars. Upon them rests (with local unconform- 

 ity) a marine deposit, a conglomeratic shelly rock varying from an 



1 The Arde Nie of the accompanying map. 



( 169 ) 



