Canterbury and Westland. 255 



Geology of Otago, page 30). Captain Hutton states, in the same 

 publication, that nowhere in Otago a junction can be found between 

 this formation, which he names the Wanaka formation, and his 

 Manipori formation, extending all along the west coast of Otago, 

 and as far east as the Te Anau and Maniporo lakes, but I have no 

 ■doubt that his Wanaka formation is simply the upper portion of his 

 Manipori formation, and that both ought to be united. 



My own researches have shown that similar rocks to those found in 

 the Lake Wanaka zone occur abundantly in the upper portion of my 

 gneiss granite formation in many localities along the western slopes 

 of the Southern Alps. Moreover, the absence of eruptive rocks, of 

 which I could not find any trace in the Wanaka district examined by 

 me, and which, according to Captain Hutton, are also wanting 

 throughout the whole zone in Otago, is a further argument in favour 

 of my view, as such rocks are also wanting in the upper portion of 

 the gneiss granite formation in Westland. 



I have already alluded to the fact that the greatest quantity of gold, 

 both at the West Coast and in Otago, is derived from this formation, 

 and I have no doubt that in many localities large lodes containing gold 

 and other precious metals will be found. Nephrite, the ponamu or 

 greenstone of the Maoris, is also found in this formation on the West 

 Coast in Greenstone Creek, the Arahura, and some other localities ; 

 however, I have never observed it in situ, and I am therefore unable 

 to say with what portion of the rocks forming this formation it is 

 associated. The Canterbury Museum possesses, however, a specimen 

 of nephrite, to which a small portion of the bed-rock, chlorite schist, 

 is still attached. 



