Abstract
Abstract Seismic reflection profiles across Karamea Bight establish the structure and development of the western shelf of central New Zealand. The Karamea continental shelf consists of an inner platform cut in Tertiary folded strata during Pleistocene periods of low sea level, and an outer delta plain which consists of sediment fans built seaward during the Pleistocene. Pleistocene sea levels were as much as 110 m below present sea level. Present day sedimentation is restricted mainly to the inner shelf where sandy muds are distributed in long narrow belts by longshore drift and nearshore wave action.
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