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dc.contributor.authorLithgow, Neil Alexander
dc.date.accessioned2019-01-29T00:19:50Z
dc.date.available2019-01-29T00:19:50Z
dc.date.issued1986
dc.identifier.urihttp://hdl.handle.net/10179/14219
dc.description.abstractA sediment survey of the beaches from Patea to Manawatu River on the southwest coast of the North Island has been undertaken. The survey objectives are to establish the beach sediment provenance, the net longshore drift and the extent of the contributing rivers to the longshore drift system. Sediments derived from the Taranaki Volcanics predominate, particularly in the northern part of the study area. However, sediment contributions from other sources (Pliocene to Pleistocene and Recent sediments, Taupo Volcanic Zone volcanics) become increasingly important in the southern part of the study area. A gradual decrease in heavy mineral abundance indicates a net southeastward longshore drift. This is further supported by the distribution pattern of the grain size parameters and local heavy mineral distribution patterns about the river mouths within the study area. The high abundance of heavy minerals and coarser sediment 1-3 km south of Whangaehu, Rangitikei and Turakina River mouths, suggests that the discharging river sediment is being deposited onto the beach at some distance south of the river mouths rather than immediately adjacent to them. Grain size parameters indicate that the Whangaehu and Rangitikei Rivers are contributing coarse sediment to the longshore drift system, while the Turakina River is supplying lesser amounts of, but finer and better sorted, sediment to the adjacent beaches at the river mouth.en_US
dc.language.isoenen_US
dc.publisherMassey Universityen_US
dc.rightsThe Authoren_US
dc.subjectNew Zealand -- North Islanden_US
dc.subjectSanden_US
dc.titleA textural and mineralogical study of the beach sands, along the southwest coast of the North Island : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Soil Science at Massey Universityen_US
dc.typeThesisen_US
thesis.degree.disciplineSoil Scienceen_US
thesis.degree.grantorMassey Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Science (M. Sc.)en_US


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