SEC. 4.] 135 



Section -i. — Neighborhood or Buchaoo and thence to Lettera Hill. 



Crossing the alluvial plain from Wagur the country is found to 

 have a very different aspect. Tlie jurassie rocks are all varieties of the 

 coarse, white, gravelly, and soft sandstones of the upper group ; and a 

 broken chain of hills, extending in an east and west direction for about 

 20 miles, presenting steep slopes to the north and longer ones to the 

 south, has its summits capped, or is sheeted along its southern side by 

 flows belonging to the stratified traps. 



The scarp is best marked between Buchaoo and Vond, becoming 

 Buchaoo and Vond broken to the west. Here the traps attain a 

 ^"^^P" considerable thickness towards the lower part of 



the southern slope, and several flows are observable ; some are decomposed, 

 rotten, and ashy, in parts amygdaloidal, others more massive and 

 compact. 



Among them a band of conglomerate with quartz pebbles is 

 interstratified, and near it some soft sandstone 



Intertrnppean beds. 



changing from white to red is similarly situated. 

 (North-east of Pussoora a thin layer of indurated white grit is also 

 interstratified with the traps) . These are not traceable for any distance 

 and are unfossiliferous. 



The lowest flow — forming the crest of the scarp — a fine grained 

 basalt rests on some beds of very unusual occurrence, conforming to the 

 traps, but apparently uneonformably succeeding the Jurassic beds ,■ these 

 peculiar rocks, although diflering in character, are found in the place 

 frequently occupied by the infra-trappeau grits. — [F. F.] 



s ( 1.35 ) 



