S74 WYNNE: GEOLOGY OF KTITCH. \_? k%'i Xi 



Among these marine bedsj and just above the shelly conglomeritic 



bandj occurs a thick lenticular mass of mottled 

 Leaf bed, , , . . 



purple and whitish silt, containing abundant 



exogenous leaf impressions, but good specimens could not be easily 



obtained, as the leaves were more or less crumpled : and the rock does 



not open in parallel laminoe. Some yellow shelly marls and rubbly 



beds succeed, the fossils of which are but imperfectly preserved. 



To the eastward at the base of the trap hills near Dubban, the 



lateritic or sub-nummulitic ffroup is found in 

 East of Kaunai. . . 



its usual place, but with a reduced thickness of 



about 50 feet. As observed to the east of Badra, the white and varie- 

 gated lavender-colored, unctuous, portions seem to have occupied slight 

 depressions in the surface of the traps which they immediately succeed, 

 being distinctly overlapped by the harder lateritic rock forming here the 

 prominent feature of the band. The saline mottled portion of the 

 unctuous rocks here closely resemble the purple lava so frequently 

 occurring in dykes crossing the Jurassic beds. 



The trap flows of this neighbourhood are generally of the usual 

 basaltic and decomposed varieties, augitic flows of greenish gray 

 colour in their upper portion containing nodules of limonite. They dip 

 generally towards the plains at low angles. 



A peculiarly rugged craggy hill called Booraghur, between Koombree 

 and Dubban, traversed by deep clefts, is formed of white, brown, and 

 black quartzite, quite jaspery in places, apparently an altered condition 

 of some of the strong Jurassic grits. 



This quartzitic variety of the Jurassic rocks is sometimes seen 

 capping hills as at Naithra 'bett' to the north-west j sometimes as 

 in this hill the bedding is quite untraceable. Where forming ramps, 

 it follows only the arrangement of their directions. In many cases 

 the traps occur close by as a ptobable cause for the alteratioUj while in 



( 374 ) 



