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Accelerator mass spectrometry radiocarbon dating of 1994 Lake Winnipeg cores

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Abstract

Conventional radiocarbon dating of Lake Winnipeg core samples has produced erroneously old ages due to the incorporation of pre-Quaternary carbon derived from carbonaceous rocks, soils and sediments in the watershed, as well as a ‘hard-water’ effect resulting from leaching of calcareous rocks and soils. To circumvent these problems and develop a reliable chronology for the Lake Winnipeg core series, a total of 64 samples from the Lake Winnipeg core series were processed to isolate well preserved macrofossils suitable for Accelerator Mass Spectrometry (AMS) radiocarbon dating. Here we report six radiocarbon ages derived from plant macrofossils and ostracodes, and reconstruct aspects of the depositional environment of each sample based on the associated macrofossil assemblage.

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Authors and Affiliations

  1. Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada, K1A 0E8, (e-mail

    R. E. Vance & A. M. Telka

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  1. R. E. Vance
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  2. A. M. Telka
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Vance, R.E., Telka, A.M. Accelerator mass spectrometry radiocarbon dating of 1994 Lake Winnipeg cores. Journal of Paleolimnology 19, 329–334 (1998). https://doi.org/10.1023/A:1007994318477

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  • DOI: https://doi.org/10.1023/A:1007994318477

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