Showing papers by "Lionel Carter published in 1980"
TL;DR: The ironsand component (ilmenite, titanomagnetite, and/or magnetite) of surficial sediments on New Zealand's western continental shelf is highest on the inner-middle shelf between Auckland and Taranaki where the mean concentration is x 0304; = 3.85% by weight as discussed by the authors.
Abstract: The ironsand component (ilmenite, titanomagnetite, and/or magnetite) of surficial sediments on New Zealand's western continental shelf is highest on the inner-middle shelf between Auckland and Taranaki where the mean concentration is x 0304; = 3.85% by weight. Sediments off Westland and Nelson contain only x 0304; = 0.17% ironsand. The subsurface distribution of ironsand, as revealed in piston cores, resembles that at the surface except that subsurface concentrations are markedly lower (e.g., x 0304; = 0.77% for Auckland-Taranaki) Textural and compositional data from the Auckland-Taranaki shelf suggest ironsand was originally concentrated under littoral conditions during the Holocene transgression and was dispersed north and southeast of the main primary source, the Egmont volcanics. The ironsand and host sediment are now approaching equilibrium with the modern hydraulic regime of waves and storm-induced currents and, therefore, are regarded as palimpsest. Any ironsand concentrated on the Westlan...
28 citations