Tephra-linked pollen and dendrochronological studies were performed on mid-Holocene subfossil peats and pines and two lowland raised bogs in the north of Ireland. The results demonstrated that at these sites, contrary to recent findings in the north of Scotland, there was no temporal link between the decline in pine pollen and tephra from the eruption of the Icelandic volcano Hekla (H4).
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Hall et al. (1994) studied this question.
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