130 Transactions of the Royal Society of Victoria. 



invading granites, have been converted for some distance 

 from the contact into mica schist, tourmaline schist, and 

 forms of gneiss. 



(5.) The numerous masses and veins of crystalline quartz 

 which occur at or near the contact, as well as the veins of 

 quartz associated with mica (muscovite), with felspar 

 (microperthite), and with tourmaline (schorl), must be 

 regarded as emanatous from the consolidating granites, 

 and, therefore, as of plu tonic origin, and thus, so far as 

 the quartz veins concerns, to be distinguished from the 

 auriferous quartz veins of the district. 



(6.) The period of geologic time at which the granite 

 magmas invaded the schists cannot be stated with precision, 

 but it may be broadly stated that it was probably 

 synchronous with the period of plutonic activity in the 

 Gippsland Alps — that is to say, at the close of the Silurian 

 or the earlier part of the Devonian periods. 



DESCRIPTIONS OF PLATES. 

 Plate T. 



Fig. 1. Diagram section (horizontal) near Hinnomunjie 

 Morass, about 200 feet in length, at the contact of the 

 muscovite granites with mica schists, (a) Alternating 

 beds of micaceous and quartzose schists striking 

 N. 55° W. (6) Muscovite granites. (c) Tourmaline 

 schist. 



Fig. 2. Diagram section (horizontal), about 400 feet in 

 length, near Hinnomunjie Morass, across the contact of 

 the muscovite granites with the mica schists, (a and/) 

 alternating micaceous and quartzose beds striking 

 N. 80°-70° W. (h h') Dykes of muscovite granite, 

 (c) Dyke of metamorphosed basic igneous rock, {d) 

 Dyke of muscovite granite, Plate II., Fig. 1. 



Tig. 3. Diagram section (vertical) at Wilson's Creek, (a) 

 Spotted fine-grained mica schist, alternating with 

 quartzose beds dipping N. 60° E. at 70°. (6) Similar 

 beds, but more altered and disturbed, (c) Gneissose 

 schists, strike probably N. 60° W. {d) Schists resemb- 

 ling a fine-grained gneiss in contact with strong dykes 



