SEC. 2.] RUNN-ISLAND RANGE FROM PUTCHUM TO CHORAR. 107 



In Kurreer again, as in Putchum, the sub-nummulitic group of 



laterite and white earthy beds re-appears, resting on 

 Sub-nummulitic. 



the flanks of the hills along the south-eastern side, 



the low dips nearly coinciding with those of the Jurassic ro^s below and 

 carrying the group beneath the overlying alluvium. The laterites here 

 are frequently very strong, giving a deep red color to the country 

 through which they run. A section across their junction with the 

 Jurassic rocks as exposed at Junan has been given at page 72, and the 

 method of the occurrence of the laterite and unctuous clay is illustrated 

 in Fig. 1, page 69. At a little distance to the north-west of Junan, the 

 junction is complicated by contortions and faults, and among the soapy 

 amygdaloidal volcanic-ashy looking clays* are soft, earthy white sand- 

 stones ; the laterites again as usual forming the uppermost part of the 

 series which is visible. 



Some few agates occur scattered over the lateritie surface east of 

 Junan. 



From Chapar to near Bamunla the junction often appears faulted, 

 and a few outlying patches of the lateritie beds rest upon the Jurassic 

 rocks northwards of the latter village. 



At the extreme north-west end of Kurreer, a mass of gray porphy- 

 ritic trachyte, rising to between 300 and 400 feet, forms the little island 

 in the Runn, called Bunjeera Doongur, surrounded by water, salt and 

 mud. Its heavily rounded outline presents a strong contrast to the 

 scarped hills of Kurreer and the distant slopes of the Putchum. It is 

 reputed to have sheltered vessels in stormy weather when the Runn was 

 a navigable sea. (Lieutenant Dodd) . 



The occurrence of this trap so nearly in line with the intrusions 

 north of Putchum Peer and Mooanna hills suggests that the line of 

 weakness through which they found their way was possibly one of 

 continuous fracture. 



* Used as soap by tlie natives. 



( 107 ) 



