An outline tephrochronology for the Holocene of the north of Ireland

Geochemically typed thin layers of Icelandic Holocene tephras form a tephrochronology for the north of Ireland. Tephrochronology construction is based on geochemical linkage with dated historic Icelandic eruptions and high-precision multisample radiocarbon dating. Comparison with geochemically typed Holocene layers at sites throughout Scotland and northern England shows that some layers are widespread throughout much of the northern British Isles. Other layers of known historic date have so far been detected only in Ireland.