Authors / CoAuthors
Nichol, S.L. | Deng, Y. | Horrocks, M. | Zhou, W | Hume, T.
Abstract
Subtidal to intertidal deposits from Kaipara Harbour in Northland preserve a 23,000+ year incomplete sedimentary record of the transition from terrestrial to estuarine conditions in the Wairoa River arm of the harbour. Cores are used to reconstruct the depositional setting for this transition, which we interpret as a succession from dune and freshwater wetland to shallow estuarine environments. The fossil pollen record provides a proxy of Last Glacial Maximum and Late Glacial vegetation for the area. Stability of the palaeo-dune landscape during the postglacial marine transgression is interpreted on the basis of strong dominance of tall forest taxa (Dacrydium) in the pollen record and soil development in dune sands. Reworking of buried dune and wetland sediments has only reached to a depth of 1.5 m below the modern tidal flat. As such, the site provides a rare example of good preservation of Pleistocene deposits at the coast, where extensive reworking and loss of record are more typical.
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nonGeographicDataset
eCat Id
67273
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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2601
Australia
Keywords
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- External PublicationScientific Journal Paper
- ( Theme )
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- stratigraphy
- ( Theme )
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- sedimentology
- ( Theme )
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- vegetation
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2008-01-01T00:00:00
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geoscientificInformation
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