Marine and estuarine reservoir effects in central Queensland, Australia: Determination of Delta R values

Ulm, S. (2002) Marine and estuarine reservoir effects in central Queensland, Australia: Determination of Delta R values. Geoarchaeology-an International Journal, 17 4: 319-348. doi:10.1002/gea.10017


Author Ulm, S.
Title Marine and estuarine reservoir effects in central Queensland, Australia: Determination of Delta R values
Journal name Geoarchaeology-an International Journal   Check publisher's open access policy
ISSN 0883-6353
Publication date 2002-01-01
Sub-type Article (original research)
DOI 10.1002/gea.10017
Open Access Status
Volume 17
Issue 4
Start page 319
End page 348
Total pages 30
Editor R. D. Mandel
Place of publication New York
Publisher Wiley Subscription Services Inc.
Language eng
Subject C1
430207 Archaeological Science
430201 Archaeology of Hunter-Gatherer Societies (incl. Pleistocene Archaeology)
750805 Aboriginal and Torres Strait Islander heritage
750901 Understanding Australia's past
Abstract As a component of archaeological investigations on the central Queensland coast, a series of five marine shell specimens live-collected between A.D. 1904 and A.D. 1929 and 11 shell/ charcoal paired samples from archaeological contexts were radiocarbon dated to determine local DeltaR values. The object of the study was to assess the potential influence of localized variation in marine reservoir effect in accurately determining the age of marine and estuarine shell from archaeological deposits in the area. Results indicate that the routinely applied DeltaR value of -5 +/- 35 for northeast Australia is erroneously calculated. The determined values suggest a minor revision to Reimer and Reimer's (2000) recommended value for northeast Australia from DeltaR = +11 +/- 5 to + 12 +/- 7, and specifically for central Queensland to DeltaR = +10 +/- 7, for near-shore open marine environments. In contrast, data obtained from estuarine shell/charcoal pairs demonstrate a general lack of consistency, suggesting estuary-specific patterns of variation in terrestrial carbon input and exchange with the open ocean. Preliminary data indicate that in some estuaries, at some time periods, a DeltaR value of more than - 155 +/- 55 may be appropriate, In estuarine contexts in central Queensland, a localized estuary-specific correction factor is recommended to account for geographical and temporal variation in C-14 activity. (C) 2002 Wiley Periodicals.
Keyword Geosciences, Multidisciplinary
Archaeology
Radiocarbon Age Calibration
Surface Ocean Radiocarbon
Great-barrier-reef
Southwestern Pacific
New-zealand
Samples
Coastal
Shells
Variability
California
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Aboriginal and Torres Strait Islander Studies Unit Publications
Excellence in Research Australia (ERA) - Collection
 
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Created: Wed, 15 Aug 2007, 04:05:52 EST