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description of a new and extensive area of 

 Permo- Carboniferous Glacial Deposits in 

 South Australia. 



By Walter Howchin, F.G.S., Lecturer in Geology and 

 Palaeontology in the University of Adelaide. 



[Read July 5, 1910.] 

 Plates XXXI. to XLV. 



Contents. 

 I. Introduction. 



II. Physiographical. 

 III. Glacial- 

 fa^ Stratigraphical Divisions. 



(b) Mount Compass and Nangkita Glacial Basin. 



(c) Giles Creek and River Finniss Glacial Basin. 



I. INTRODUCTION. 



Papers have already been read before this Society on the 

 Permo - Carboniferous glacial phenomena of Hallett's Cove, 

 Yorke Peninsula, Kangaroo Island, Cape Jervis, Yankalilla, 

 the Inman and Hindmarsh Valleys, Rosetta Head, and 

 King's Point. The present paper deals with the extension of 

 these glacial beds in an easterly direction, and concerns mainly 

 the highlands and swamps situated to the south of the Wil- 

 lunga Range, the basin of the River Finniss, and other lines 

 of drainage which find their outlets into the valley of the 

 River Murray. The region includes portions of the Hundreds 

 of Kondoparinga, Myponga, Nangkita, Goolwa, and Encoun- 

 ter Bay. 



The glacial beds now under consideration possess charac- 

 teristics similar to those already described on the western 

 side, and, at some points, these respective glacial areas are 

 continuous. There are, however, minor points of difference 

 between the two districts which may be mentioned. On the 

 eastern highlands and their slopes towards the valley of the 

 River Murray the larger erratics of granite, etc., so char- 

 acteristic a feature in the western country, are almost entirely 

 absent, and in the case of those erratics that do occur, granite 

 boulders are relatively scarce. An explanation for these 

 differences will probably be found in the contrasted topo- 



