580 president's address. 



In New Zealand the Te Anau and the Reefton Series complete 

 the sediments constituting Mutton's Siluro-Devonian Takaka 

 System, nineteen miles in thickness. Extensive contemporaneous 

 eruptive rocks, including the rare ultrabasic rock dunite, are 

 stated by Hector to have been erupted in Devonian time, but 

 Captain Hutton questions the contemporaneity of the eruptive 

 series. 



Folding. — In Victoria the Middle Devonian rocks, as repre- 

 sented by the Bindi limestones, have a general N.W. and S.E. 

 strike. The Tabberabbera shales and Cobannah quartzites have 

 been highly folded subsequent to the folding of the Silurian rocks."^ 

 This folding was almost completed before the deposition of the 

 overlying Lejndodendron beds^ probably of Lower Carboniferous 

 Age, as has been proved by Mr. A. W. Howitt.f 



In New South Wales nothing is yet known about the folding 

 of the Coodra Vale Middle Devonian (?) limestones. 



In Queensland the Middle Devonian rocks at Burdekin Downs 

 strike N.E. and S.W., and are folded. On the Broken River the 

 folds trend N.E. by N., the dip varying from 20° to 75°. At 

 Kangaroo Hills the axes run N.E., and at Chilla^oe E.S.E. 



Mr. R. L. Jack has kindly informed me by letter " that there 

 is no evidence as to when this folding took place in Queensland, 

 as the Devonian is not seen anywhere in contact with newer 

 rocks, and so we cannot tell whether they have been folded 

 together or not. The hiatus, however, between Middle Devonian 

 and our next series (Gympie) itself implies an upheaval and in 

 all probability a folding prior to Gympie times" (Carboniferous. — 

 T.W.E.D.). 



If the Middle Devonian of Queensland is the equivalent of the 

 Buchan and Bindi limestones of Victoria, and tnese rocks in 

 Victoria were folded before the deposition of the Lower Carbo- 

 niferous or perhaps even L^pper Devonian rocks, it is highly 



* Murray's Geology of Victoria, p. 56. 

 t Geological Progress Report, I^o. iii. p. 214 and following; and Murray's 

 Geology of Victoria, pp. 51-04, pi. 13, 15, and 16. 



