Rhyolitic tephra horizons in northwestern Europe and Iceland from the AD 700s-800s: a potential alternative for dating first human impact

• Published in: The Holocene
• Main Authors: Wastegard, S., Hall, V. A., Hannon, G. E., van den Bogaard, Christel, Pilcher, J. R., Sigurgeirsson, M. A., Hermanns-Audardóttir, M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: SAGE Publications 2003
• Subjects: Faroe Islands; Torfajökull; Iceland; North Atlantic
• Online Access: https://oceanrep.geomar.de/id/eprint/7250/; https://oceanrep.geomar.de/id/eprint/7250/1/Wastegard.pdf; http://www.ingentaconnect.com/content/arn/hol/2003/00000013/00000002/art00011; https://doi.org/10.1191/0959683603hl617rr

The distribution and geochemistry of four rhyolitic tephra horizons from Iceland dated to the ad 700s–800s is assessed. These include the rhyolitic phase of the Landnám tephra (ad 870s), the ad 860 layer, a previously unrecorded tephra called the GA4–85 layer (c. ad 700–800) and the Tjïrnuvík tephra...