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(Article of periodic en Anglais - 2013)

Document title

Determining the impact of the Holocene highstand at the coastal-fluvial interface, Shoalhaven River, south-eastern Australia

Authors(s) and Affiliation(s)

KERMODE S.J. (1) ; GIBLING M.R. (2) ; JONES B.G. (1) ; COHEN T.J. (1) ; PRICE D.M. (1) ; DALEY J.S. (1) ;
(1) GeoQuEST Research Centre, School of Earth and Environmental Science, Univ., Wollongong, AUSTRALIE
(2) Dept. of Earth Sciences, Dalhousie Univ., Halifax, CANADA

Abstract

With enhanced rates of sea-level rise predicted for the next century, the upstream extent of sea-level influence across coastal plains is a topic of public importance. In the Shoalhaven River of New South Wales, investigation of a confined bedrock reach at Wogamia, 32 km inland, has identified a unit of dark, cohesive silt and sand with marine diatoms, shell fragments, and enhanced pyrite content, interpreted as estuarine. The unit is up to 13 m thick, thickens downstream, and is overlain by fluvial channel and floodplain deposits. The estuarine unit on-laps a remnant Pleistocene terrace and extends to approximately +2.2 m above Australian Height Datum (AHD). Although the effect of sea-level rise depends on many factors, the stratigraphic results suggest that, during a highstand at or above present sea level, a strong marine influence may extend for tens of kilometres inland and penetrate confined bedrock reaches landward of coastal embayments

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no13 [pp. 1481-1495]

Bibliographic references : 2 p.

Collation : 8 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3382

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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