Incremental accretion of a sandy reef island over the past 3000 years indicated by component-specific radiocarbon dating

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dc.contributor.authorWoodroffe, CDen_AU
dc.contributor.authorSamosorn, Ben_AU
dc.contributor.authorHua, Qen_AU
dc.contributor.authorHart, DEen_AU
dc.date.accessioned2008-04-22T05:40:41Zen_AU
dc.date.accessioned2010-04-30T05:03:34Zen_AU
dc.date.available2008-04-22T05:40:41Zen_AU
dc.date.available2010-04-30T05:03:34Zen_AU
dc.date.issued2007-02-06en_AU
dc.date.statistics2007-02en_AU
dc.description.abstractLow-lying reef islands appear particularly threatened by anticipated sea-level rise, and determining how they formed and whether they are continuing to accumulate sediment is essential for their sustainable management. Depositional chronology of Warraber Island, a small sand cay in Torres Strait, Australia, is re-examined based on AMS radiocarbon dating of specific skeletal components. Whereas radiometric dating of bulk sand samples indicated one or more discrete phases of mid-late Holocene deposition, component-specific AMS radiocarbon dating of sand grains indicates sustained incremental growth over the past 3000 years. Ages on gastropods that lived on the reef flat around the island indicate continuing sediment production and island progradation, in contrast to bulk ages and other components produced at greater distances. Growth of sand cays depends on the rate and pattern of sediment supply, which are functions of the local ecology of the surrounding reef and reef flat, and hydrodynamic constraints. © 2007, American Geophysical Unionen_AU
dc.identifier.articlenumberL03602en_AU
dc.identifier.citationWoodroffe, C. D., Samosorn, B., Hua, Q., & Hart, D. E. (2007). Incremental accretion of a sandy reef island over the past 3000 years indicated by component-specific radiocarbon dating. Geophysical Research Letters, 34(3), L03602. doi:10.1029/2006GL028875en_AU
dc.identifier.govdoc1232en_AU
dc.identifier.issn0094-8276en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleGeophysical Research Lettersen_AU
dc.identifier.urihttp://dx.doi.org/10.1029/2006GL028875en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1100en_AU
dc.identifier.volume34en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.subjectIslandsen_AU
dc.subjectReefsen_AU
dc.subjectSea levelen_AU
dc.subjectIsotope datingen_AU
dc.subjectSedimentsen_AU
dc.subjectSanden_AU
dc.titleIncremental accretion of a sandy reef island over the past 3000 years indicated by component-specific radiocarbon datingen_AU
dc.typeJournal Articleen_AU
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