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THE GEOLOGY OF THE NANDEWAR MOUNTAINS. 



By H. I. Jensen, B.Sc, Linnean Macleay Fellow of the 

 Society in Geology. 



(Plates xlvi.-lii.) 



A. General Geology and Physiography. 

 1. Introduction. 



The mountains described under this name lie in the Counties 

 of Nandewar, Murchison, Jamieson and Darling, and are 

 situated between the townships of Narrabri, Barraba and 

 Bingera. In a former paper I made brief mention of this group 

 of mountains (These Proceedings, 1906, p. 235); since its publi- 

 cation I have spent two more months in the district, and am in 

 consequence able to give a more detailed account, ■ 



The Nandewar Mountains in their physiographic features 

 bear close resemblance to the \Yarrumbungles, and they are 

 exceedingly rich in rock-tj^pes. 



