Speight and Wild. — Weka Pass Stone and Amuri Limestone. 93 



Morgan, P. G., 1916. Notes on a Visit to Marlborough and North Canterbury, with 

 Especial Reference to Unconformities post-dating the Amuri Limestone, 10th Ann. 

 Rev. (n.s.) N.Z. Geol. Snrv., Pari. Paper C.-2b, pp. 17-28. 



1916a. Record of Unconformities from Late Cretaceous to Early Miocene in 



New Zealand, Trans. N.Z. Inst., vol. 48, pp. 1-18. 



Park, J., 1888. Rep. Geol. Explor. dur. 1887-88, p. 25-35. 



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1910. The Geology of New Zeala ml. 



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 (n.s.), dec. 5, vol. 9, p. 314. 



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Trans. N.Z. Inst, vol. 48, pp. 48-58. 

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Art. VI. — Structural and Glacial Features of the Hurunui Valley. 



By R. Speight, M.Sc, F.G.S., Curator of the Canterbury Museum. 



[Read before the Philosophical Institute of Canterbury, 5th December, 1917 ; received by 

 Editors, 31st December, 1917 ; issued separately, 24th May, 1918.] 



The Hurunui Valley is one about which little has been said in geological 

 literature, though it is one of the most interesting of the main river-valleys 

 of Canterbury, not only for its structural pecularities, but also for the glacial 

 features of the country in the vicinity of its headwaters. The comparative 

 neglect is perhaps due to the relative inaccessibility of its higher parts owing 

 to the absence of roads, though before the discovery of Arthur's Pass it was 

 the recognized route from Canterbury to Westland, while the lower portions 

 were, till the opening of the Cheviot Settlement and the completion of the 

 Waipara-Cheviot Railway, epiite off the main lines of communication. 



In 1865 Haast made a journey up the river across the island, an account 

 of which is given in his Geology of Canterbury and Westland (1879), includ- 

 ing a general description of the chief landscape features of the upper part 

 of the basin. In 1871 he visited the middle Hurunui, and furnished a 

 report (1871), in which he referred to the basin of the Mandamus, the main 

 northern tributary of the Hurunui. Hutton (1877, pp. 34, 35; 1889) also 

 gave some account of the locality, and dealt with the origin of the Hurunui 

 Plains (1877, pp. 55, 56). This is practically all that has been written on 

 the features of the main valley, except a brief reference by myself (1915, 

 pp. 347-48) to the formation of the Waiau-Hurunui intermontane basin. 

 Of course, there is abundant reference to the country to the north and 

 south of the river, such as the Pahau Valley, and to the interesting 

 stratigraphical questions connected with the Waikari and Greta Valleys, 

 but a consideration of these is foreign to the scope of this paper. It is 

 intended to give an account of the general geology of the basin only in so 

 far as it is connected with its peculiar structural and glacial features. 



