"280 Geology of 



Relations to the Older Formations. 



There is no doubt that great unconformity exists between this and 

 the Waihao formation, of which clear proofs are to be found near 

 Burke's Pass and the "Waihao country. In the Southern Alps proper, 

 the boundaries between the two formations are not so clearly denned, 

 in most instances no break being visible. In such cases, it is 

 impossible to define the boundary line between them, the facies of the 

 rocks being the only guide. Amongst the localities where this uncon- 

 formity is to be observed, one occurs near the head of the Stewart, 

 one of the source branches of the Eakaia, another twelve miles up 

 the Eiver Hopkins, and again on the slopes of Mount Brewster, but 

 generally in ascending the rivers, we cross from one formation into 

 the other, without observing any difference in the strike and dip of 

 the strata. 



-<s^s> 



