238 PROCEEDINGS OF SECTION C. 



[leriod has resulted in the formation of the south-west north-east 

 mountain axis. The older period was held to account for the north- 

 west axes in Otago and North Auckland. It is now shown in the 

 bulletins refen^ed to that the south-east north-west axis is not older 

 than the other. The same is true in Otago, where the Triassic rocks 

 are wholly involved in the folding. 



At the Auckland Islands the structure is^fhat of nearly horizontal 

 basaltic lavas resting nearly horizontally on gabbro and granite pro- 

 bably of much greater age. 



Campbell Island has a mass of gabbro on which rest nearly 

 horizontally conglomerates, shales, and limestones of Miocene age. 

 These have been covered by a great mass of tuffs, over which were 

 afterwards poured lavas ranging from trachytes to melilite basalt. 



The Snares are formed entirely of granite. 



B. — Glaciation, New Zealand. 



In Bulletin 3, New Zealand Geological Survey, full details are 

 given of the effects of glaciation in the north-west of Nelson. Boulder 

 Lake, a rock basin previously mentioned by Park, is here fully 

 described. Its elevation is 4,018 feet above sea level. A reconnaisance 

 with Dr. Bell along these mountains in 1908 convinced the writer 

 that the heads of all the valleys at the head waters of the Aorere, and 

 of the northern tributaries of the Karamea, owe their features to 

 glaciation. The opinion was based on the U-shaped valleys, the fre- 

 quent presence of rock basins, the uniform occuiTence of cirques at the 

 heads of them, and the usual glaciated rock surfaces. 



A visit to Ruapehu by the writer in 1907 showed that there is 

 no indication of heavier glaciation on that volcano than is found there 

 at the present time. 



In the Southern Islands no glacial features were found by Mr. 

 Speight and the writer on the Snares. 



In the Auckland group all the main featiu'es are ascribed by us 

 to glaciation. Mr. Speight observed examples of lateral moraines at 

 Carnley Harbour. At Norman's Inlet and other places there are 

 typical hanging valleys. The valley heads are cirques. The valleys 

 are U-shaped. Lateral streamlets flow over rock faces in which no 

 erosion has taken place. 



The same features were found in Campbell Island. Lateral 

 moraines are found near the head of North-East Harbour, othei-wise 

 the remarks made in regard to Auckland Island apply with equal force 

 here. 



In Stewart Island the only recorded instance of glaciation is on 

 the slopes near the summit of Mount Anglem, 3,000 feet high, but the 

 topography of the island requires more detailed examination, for many 

 facts in regard to the form of valleys near Poi"t Pegasus suggest glacia- 

 tion. 



C. — Glaciation — New South Wales. 



A specimen of Cambrian glacial till, obtained at Cartwright's 

 Creek, twenty-seven miles north-north-west of Broken Hill, was ex- 

 hibited by Mr. W. N. Benson, B. Sc. In 1894, Mr. J. B. Jaquet, F.G.S., 

 noted the occurrence here of large watei'worn boulders of granite, and 

 fragments of schist in a schistose matrix. Recent examination showed 



