Langdon, P.G. and Barber, K.E.
New Holocene tephras and a proxy climate
record from a blanket mire in northern Skye,
Journal of Quaternary Science, 16, (8), . (doi:10.1002/jqs.655).
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Four Holocene tephras of Icelandic origin have been identified and geochemically
characterised from a water shedding blanket peat sequence on the Trotternish ridge, Isle of Skye,
Scotland. Geochemical characterisation of the shards propose the Glen Garry tephra to be present,
a tephra layer of Hekla origin incorporating shards from Hekla-4, as well as two new tephras dated
by interpolation from a radiocarbon based chronology to ca. 830 cal. yr BP and ca. 2340 cal. yr BP.
The new historic tephra has an ambiguous geochemistry and therefore has not been correlated with
other known Icelandic historic tephras. The new prehistoric tephra is suggested as originating from
the Snæfellsj ¨ okull volcano in northwest Iceland and forms an important stratigraphical marker in
this Holocene sequence. A proxy climate record has been derived from humification analyses of the
peat, which compares well with other regional palaeoclimatic reconstructions, as well as enabling
correlations based on tephra geochemical linkages between sites and climatic records at precise
times in the past
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