Metamorphic and Plutonic Rocks at Omeo. 101 



rocks, wliicli crosses Livingstone Creek just bekjw tlie 

 northern end of the Hinnoniunjie Morass, and thence 

 extends probably to the Mitta Mitta River, if not beyond. The 

 total distance of the contact which I have observed is not 

 less than ten miles. 



Speaking generally, the rocks on the north-cast side of this 

 contact are varieties of metamorphosed sediments, which, at 

 a distance from it, still retain the outward semblance of the 

 alternatinor ariTjillaceous and arenaceous beds of the Silurian 

 formations, while near to the contact, they are in places so 

 metamorphosed as no longer to be recognisable when seen in 

 hand samples. On the south-western side of the contact the 

 rocks are almost wholly crystalline intrusive rocks, mostly 

 granites, and with, in places, small areas of gneiss. 



This contact represents a great fault, the amount of down- 

 throw on the north-eastern side having brouoht the sedi- 

 mentary strata within the influence of the intrusive rock 

 masses. It is not possible to sa}'' how much has been the 

 amount of down- throw, for there is not any standard which 

 may be taken for reference. The sedimentary rocks have 

 been almost completely denuded for long distances on the 

 south-western side of the contact, and those that remain 

 in the nearest localities, as for instance on Mount Living- 

 stone, or in Mountain Creek, are so much metamorphosed 

 as to afford no measure of comparison. Nor can any data be 

 obtained from the relative position of the contact planes in 

 those places and at Wilson's Creek or Hinnomunjie Morass. 



The sections and diagrams which accompany these notes, 

 together with the analytical examinations of the rocks 

 collected, will give further insight into the interesting 

 features of this locality. 



Hinnomunjie Morass. — The line of contact, as I have 

 already said, crosses Livingstone Creek at a short distance 

 below the Hinnomunjie Morass, and thence extends, I know 

 not how far, towards or beyond the Mitta Mitta River. 

 The line of contact is not a regular one when locally 

 examined, yet, when traced for some distance in its coui'se, 

 it will be found to maintain a general direction approaching 

 to north-west. Moreover, on looking across the undulating 

 country crossed by it, the difference in outline of the schist 

 hills on the one side, and of the granite hills on the other, is 

 often quite perceptible to the accustomed eye. The local 

 irregularity in the contact line is due to the protuberance 



