392 



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W. R. BROWNE AND A. B. WALKOM. 



The western extension of the 

 agglomerate outcrop is cut off 

 under this dacite, but on the 

 eastern side it abruptly joins 

 the Mount Bright trachyte, and 

 is seen no further south. A 

 similar sharp boundary exists 

 for the trachy-andesite and 

 Mount Bright trachyte, and 

 these circumstances indicate a 

 faulted junction. (Vide Section 

 2.) 



Another small fault is probably 

 to be placed to the east of the 

 old road, letting down the Car- 

 boniferous conglomerate and 

 trachyte a vertical distance of 

 about a hundred feet. No great 

 extension of this fault can be 

 traced, whence it may be argued 

 that it antedated the agglomer- 

 ate and consequently the dacite. 

 A line of fracturing and crushing 

 is developed in the dacite, 

 whereby a typical crush-breccia 

 has been produced. Every phase 

 can be traced, from the unjointed 

 rock, through a highly jointed 

 zone to a zone of intense fracture 

 and lateral movement. This is 

 however, merely a local phe- 

 nomenon. 



A fault on the extreme west 

 of the area which has brought 



sMTsTTT 



