Please use this identifier to cite or link to this item:
|Title:||A 6000 Year Old Fossil Dugong from Botany Bay: Inferences about Changes in Sydney's Climate, Sea Levels and Waterways||Contributor(s):||Haworth, Robert John (author); Baker, Robert Graham (author); Flood, Peter Gerard (author)||Publication Date:||2004||DOI:||10.1111/j.1467-8470.2004.00242.x||Handle Link:||https://hdl.handle.net/1959.11/1410||Abstract:||The excavation in the 1890s of a skeleton of the warm-water marine mammal 'Dugong dugon', associated with Aboriginal artefacts, from a Botany Bay salt marsh, marked the beginning of speculation about climate and sea level change in Australia over the period of human occupation. The dugong bones have recently been dated, giving a conventional ¹⁴C age of 5520±70 years BP, which is consistent with three older ¹⁴C dates for a layer of buried trees that underlies much of the north Botany sediments. The carefully drawn cross-sections of depositional strata produced by the original discoverers allow further interpretation of the pattern of Holocene sea-level fluctuations in the Sydney region. Layers of estuarine sediment, such as the one containing the dugong skeleton, are inter-bedded with peat layers containing 'in situ' roots and stumps, suggesting that the site alternated between sub-aerial exposure and submergence throughout the Holocene. The presence of the dugong is suggestive of warmer conditions, and its inland location indicates a more extensive Botany Bay in the recent past. This is in agreement with other work from southern New South Wales describing both warm-water marine species and higher sea levels several thousand years ago.||Publication Type:||Journal Article||Source of Publication:||Australian Geographical Studies, 42(1), p. 46-59||Publisher:||Wiley-Blackwell Publishing Asia||Place of Publication:||Carlton South, Australia||ISSN:||0004-9190
|Field of Research (FOR):||069902 Global Change Biology||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 314
|Appears in Collections:||Journal Article|
Files in This Item:
checked on Nov 26, 2018
checked on Mar 4, 2019
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.