Barrell, D.J.A.; Riddolls, B.W.; Riddolls, P.M.; Thomson, R. 1994 Surficial geology of the Wakatipu Basin, Central Otago, New Zealand . Lower Hutt: Institute of Geological & Nuclear Sciences Institute of Geological & Nuclear Sciences science report 94/39 31 p.
Abstract: This report, accompanied by a 1:50 000 scale geological map and illustrative cross sections, outlines the distribution of surficial deposits within the Queenstown-Arrowtown area (Wakatipu Basin), western Central Otago, New Zealand. This geological information is intended to provide a framework for focusing future research, as well as providing basic geological data which may benefit development of the region. Surficial deposits form a discontinuous cover on a basement of Otago Schist, and on the basis of depositional origin have been broadly subdivided into three groups: (i) glacial deposits; (ii) stream, river and lake deposits; and (iii) slope deposits. On the flanks of the ranges which surround the basin, slope deposits comprising landslides and colluvium predominate, with some remnants of glacial, stream, river and lake deposits which are thought to generally predate the last glaciation. The floor of the basin is mantled by glacial, stream, river and lake deposits, which are thought to have been laid down during and since the last glaciation. Future geological studies need to focus upon detailed mapping of the deposits, which will improve understanding of the geological and geomorphological evolution of the area. (auths)