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1 results

  • Measurement of Significant Marine Paleotemperature Variation Using Black Abalone Shells from Prehistoric Middens

  • Jeanne E. Arnold, Brian N. Tissot
  • Journal:
    Quaternary Research / Volume 39 / Issue 3 / May 1993
    Published online by Cambridge University Press:
    20 January 2017, pp. 390-394

  • The archaeological record from the last millennium in southern California indicates that a period of significant cultural change was associated with a reported marine paleoenvironmental disruption ca. 1150-1250 A.D. A lengthy warm-water anomaly may have in part precipitated more complex sociopolitical and economic responses. We develop independent verification of the perturbation (originally deduced from sediment core data) using archaeological data. Respiratory pore number allometry in the black abalone shell is known to vary clinally in modern populations in response to temperature-induced variation in rate of growth. We use developmental trajectories of abalone from dated, stratified archaeological deposits to reconstruct prehistoric seawater temperatures.