The literature referring to the geology of the Cascade Valley and the Jackson's Bay district has already been summarised (Turner, 1930a, p. 172).
In addition to this, a brief report on the metamorphic rocks north of the Haast River is given by Cox (1877a, pp. 72–74), while Haast himself (Haast, 1879, pp. 46–56) gave an interesting account of his early geological explorations in Southern Westland during 1862 and 1863, when he travelled from Lake Wanaka across the Haast Pass to the West Coast by way of the Haast Valley, returning later by the same route. In the same volume (pp. 249–265) a considerable space is devoted to the metamorphic rocks of Westland, which were divided by Haast into three groups: a lower series or Gneiss Granite Formation and two overlying series, the Westland and Waiho Formations respectively. Haast was unfamiliar with much of the country with which the present paper deals, and for this reason, and in the absence of descriptive petrography from his account, his work will not be considered further.