46 Transactions. 



be followed into the Kangitata Valley, it is found that the steep tent-sided 

 face of the Ben Macleod Kange, which forms the southern boundary of the 

 Forest Creek valley, is in actual alignment with it. This striking surface- 

 feature cannot be accounted for as the result of stream or glacier erosion, 

 but if faulting be granted it would also explain the subdued character of 

 the surface which lies to the south of the Mesopotamia homestead, this 

 having been lowered as a result of the earth-movement, and it would 

 also help to account for the form of the Rangitata intermount. Further, 

 if the line of the north-west face of the Richmond Range be continued 

 to the south-west across Lake Tekapo it will pass along the north flank of 

 the isolated Mount John, and bound the considerable area of flat country 

 which lies between that elevation and the Mistake Range, which may also 

 owe its form to having been faulted down. This is a pure speculation, 

 but the peculiar position of Mount John requires some explanation, and it 

 seems impossible to account for it as the remnant of a spur or extension of 

 the Mistake Range, with the connecting-ridge removed entirely by normal 

 glacial erosion. 



In concluding, I should like to express my indebtedness to Mr. James 

 Pringle, of Richmond Station, who not only gave valuable information 

 with regard to the district, but also kindly provided means of transport 

 so that the most was made of the time at my disposal. 



References. 



Cotton, C. A., 1916. Structure and Late Geological History of New Zealand, Geol. 

 May., dec. vi, vol. 3, pp. 243 and 314. 



1917. Block Mountains in New Zealand, Am. Jour. Sci., vol. 44, p. 249. 



■ 1919. Rough Ridge, Otago, and its Splintered Fault-scarp, Trans. N.Z. Inst., 



vol. 51, p. 282. 

 Hutton, F. W., 1875. Geology of Otago, p. 64. 



1884. Origin of the Fauna and Flora of New Zealand, Ann. Mag. Nat. Hist, 



ser. 5, vol. 13, p. 425. 



1885. Ibid., vol. 15, p. 77. 



Kitson, A. E., and Thiele, E. 0., 1910. The Geography of the Upper Waitaki Basin, 



New Zealand, Geog. Jour., vol. 36, p. 431. 

 McKay, A., 1882. Geology of the Waitaki Valley and Parts of Vincent and Lake 



Counties, Rep. Geol. Explor. during 1881, p. 56. 

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1897. Report on the Older Auriferous Drifts of Central Otac/o, 2nd ed. 



Marshall, P., 1915. Cainozoic Fossils from Oamaru, Trans. N.Z. Inst., vol. 47, p. 337. 

 Park, J., 1906. Marine Tertiaries of Otago and Canterbury, Trans. N.Z. Inst., vol. 38, 



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Bull. No. 5. 



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Speight, R., 1915. The Intermontane Basins of Canterbury, Trans. N.Z. Inst., 



vol. 47, p. 336. 



