588 GREAT SERPENTINE BELT OF NEW SOUTH WALES, ii., 



Creek is a gravelly deposit in the creek-bed, which contains large 

 zircons, colourless or brown, and sapphires, sometimes of good 

 quality, "as large as your finger-nail and blue like a castor-oil 

 bottle." These are probably derived from another interbasaltic 

 layer of gravels. 



BASALT 



Flows 



W Necks 

 |g GRAVEL 



W00L0NUN 



Fig. 3.— Plan of the Nundle District, showing position of basalt 

 necks and the various lines of section in Figs. 4 and 6. 



On the divide, between Nuggety and Quackanacka Creeks, a 

 peculiar, fine, pink clay lies beneath the basalt. It has not been 



