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    14C Age of Glaciation in Estrecho de Magallanes–Bahía Inútil, Chile

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    Author
    Heusser, C. J.
    Issue Date
    1999-01-01
    Keywords
    Bahia Inutil Chile
    Estrecho de Magallanes Chile
    Magallanes Chile
    Puerto del Hambre
    reworking
    Chile
    age
    accuracy
    South America
    Holocene
    paleoclimatology
    Pleistocene
    glaciation
    Cenozoic
    Quaternary
    C 14
    carbon
    dates
    isotopes
    radioactive isotopes
    absolute age
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    Citation
    Heusser, C. J. (1999). 14C age of glaciation in Estrecho de Magallanes–Bahía Inútil, Chile. Radiocarbon, 41(3), 287-293.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    URI
    http://hdl.handle.net/10150/654390
    DOI
    10.1017/S0033822200057143
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Basal 14C dates from a core of the mire at Puerto del Hambre (53 degrees 36'21"S, 70 degrees 55'53"W), located within the area of glaciation in Estrecho de Magallanes-Bahia Inutil, Chile, are no older than 14,455 +/115 yr BP. The 14C dates are on samples from which screening isolated autochthonous plant remains. Previous 14C dates of 15,800 +/200, 16,590 +/320, and 16,290 +/140 yr BP are from bulk samples collected from similar basal increments at the site during 3 separate, independent coring operations. The previous suite of 14C dates was suspected to be contaminated by older carbon in the light of chronological evidence, which indicates a 14C age of approximately 14,850 yr BP for glaciation elsewhere in southern Chile. Contamination by "infinitely old" carbon reworked from nearby Tertiary beds and redeposited at Puerto del Hambre is evidently the cause for the older 14C dates.
    Type
    Article
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200057143
    Scopus Count
    Collections
    Radiocarbon, Volume 41, Number 3 (1999)

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