Quaternary tephrachronology on the Iceland Plateau, north of Iceland

Abstract Four major ash zones recorded in piston cores raised from the Iceland Plateau north of Iceland are shown to be coincident with the last four interglacial isotopic stages. Their geochemical composition links the ashes to volcanic events on Iceland. The occurrence of these ash layers, which r...

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Bibliographic Details
Published in:Journal of Quaternary Science
Main Authors: Sejrup, H. P., Sjøholm, J., Furnes, H., Beyer, I., Eide, L., Jansen, E., Mangerud, J.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1989
Subjects:
Paleontology
Earth and Planetary Sciences (miscellaneous)
Arts and Humanities (miscellaneous)
Iceland Plateau
Ice cap
Iceland
Sea ice
Online Access:http://dx.doi.org/10.1002/jqs.3390040202
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.3390040202
https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3390040202
Description
Summary:Abstract Four major ash zones recorded in piston cores raised from the Iceland Plateau north of Iceland are shown to be coincident with the last four interglacial isotopic stages. Their geochemical composition links the ashes to volcanic events on Iceland. The occurrence of these ash layers, which record events orders of magnitude larger than the ‘normal’ Holocene volcanic eruptions, can not be explained by changes in sea ice cover and atmospheric circulation alone. It is suggested that these events are related to pressure releases in the magma chambers resulting from major deglaciations of the Icelandic Ice Cap.

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