A protocol for radiocarbon dating tropical subfossil cave Guano

Wurster, Christopher M., Bird, Michael I., Bull, Ian, Bryant, Charlotte, and Ascough, Philippa (2009) A protocol for radiocarbon dating tropical subfossil cave Guano. Radiocarbon, 51 (3). pp. 977-896.

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Abstract

We present accelerator mass spectrometry (AMS) radiocarbon dates on several organic fractions isolated from tropical guano deposits recovered from insular Southeast Asia. Differences were observed between 14C measurements made on bulk guano as well as bulk lipids, the saturated hydrocarbon fraction, solvent-extracted guano, and insect cuticles extracted from the same bulk sample. We infer that 14C dates from the bulk lipid fraction and saturated hydrocarbon fractions can be variably contaminated by exogenous carbon. In contrast, 14C measurements on solvent-extracted guano and isolated insect cuticles appear to yield the most robust age determinations.

Item ID: 10866
Item Type: Article (Refereed Research - C1)
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ISSN: 0033-8222
Date Deposited: 11 May 2010 00:49
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040606 Quaternary Environments @ 50%
21 HISTORY AND ARCHAEOLOGY > 2101 Archaeology > 210102 Archaeological Science @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970105 Expanding Knowledge in the Environmental Sciences @ 100%
Citation Count from Web of Science Web of Science 1
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