84 BLANPOllD : GEOLOGY OF WESTERN SIND. 



o£ Manchhar beds stretches southward into the alluvium, as a great pro- 

 montory, as far as the Burri Nai. The conglomerate at the top of the 

 Manchhars is not seen on the eastern side of the alluvial bay, although 

 it re-appears to the eastward of the anticlinal on the edge of the great 

 plain. The absence of this conglomerate east of the synclinal may, like 

 the paucity of upper Manchhar clays in the corresponding position on 

 the Kenji river, be due to a fault along the synclinal axis. Near Lakha 

 Pir, north of the Mazarani stream, a much greater thickness of beds 

 appears to be exposed east of the anticlinal than west of it. 



The large tract of country occupied by Manchhar beds around Lakha 

 Pir and Shah Godria, east of the synclinal, is of small interest. It con- 

 sists, like most of the Manchhar country, of low barren hills of soft 

 sandstone, with gravel flats between. The uppermost conglomerate 

 forms a ridge along the edge of the alluvium, but the beds underlying it 

 are here sandstones ; whereas a few miles to the south-west they are 

 mostly clays. 



The section on the Dredhak stream south of the Mazarani is good, 



exposing Nari and Gaj beds well, all dipping east- 

 Passage beds between . • • . 

 Gaj and Manchhar on ward at aoout 25 to dO ; but there is nothing to 



re a s ream. which to call particular attention, except the pre- 



valence of ill-preserved fucoids in the Nari sandstones and the passage 

 beds between the Gaj and Manchhar. These latter are particularly well 

 seen at a spot called Lehro-jo-garok, where they must be at least 200 

 feet thick, and consist of grey, olive, and brown clays and sandstones, 

 calcareous beds, and red clays. Some are fossiliferous. At the base occur 

 clays with Corbula trigonalis ; above these is a hard calcareous band abound- 

 in^ in Placuna. This bed also contains Ostrea multicostata, the common 

 Gaj species. Below the Placuna bed is a thin band with a small Ostrea 

 or Anemia. About 100 feet above the Placuna bed is a stratum abound- 

 ing in large oysters. 



The Burri stream (Burije of map) runs between the two high peaks 

 G i beds of Amru °^ Amru and Hashim (Hashun of map) , partly 

 &c - composed of Gaj beds. To the south of the 



( 81 ) 



