Rapid, automatic scanning of reflectance variations along peat profiles from Corlea, central Ireland, known to contain prehistoric tephra layers dated to around 2300 cal. bc, has enabled the detection of these layers by non-destructive means. By using both light reflectance and luminescence properties it is believed that very thin and often discontinuous distal tephras characteristic of the Late Quaternary in northwest Europe may be detected within peat profiles.
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Caseldine et al. (1999) studied this question.
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