Freshwater reservoir offsets and food crusts: Isotope, AMS, and lipid analyses of experimental cooking residues.

Autor: John P Hart, Karine Taché, William A Lovis
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: PLoS ONE, Vol 13, Iss 4, p e0196407 (2018)
Druh dokumentu: article
ISSN: 1932-6203
83245316
DOI: 10.1371/journal.pone.0196407
Popis: Freshwater reservoir offsets (FROs) occur when AMS dates on charred, encrusted food residues on pottery predate a pot's chronological context because of the presence of ancient carbon from aquatic resources such as fish. Research over the past two decades has demonstrated that FROs vary widely within and between water bodies and between fish in those water bodies. Lipid analyses have identified aquatic biomarkers that can be extracted from cooking residues as potential evidence for FROs. However, lacking has been efforts to determine empirically how much fish with FROs needs to be cooked in a pot with other resources to result in significant FRO on encrusted cooking residue and what percentage of fish C in a residue is needed to result in the recovery of aquatic biomarkers. Here we provide preliminary assessments of both issues. Our results indicate that in historically-contingent, high alkalinity environments
Databáze: Directory of Open Access Journals
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