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GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, VOL. 4, NO. 11, 1097, doi:10.1029/2003GC000608, 2003

Volcanic ash retrieved from the GRIP ice core is not from Thera

Douglas J. Keenan

The Limehouse Cut, London E14 6N, UK


Abstract

Tephra found in an ice core from Greenland (GRIP) has been claimed to be from the Minoan eruption of Thera (Santorini), Greece. If true, this would date the eruption, thereby resolving a decades-long debate in chronology. Herein, it is shown that the methods used to match the Greenlandic tephra with Thera are flawed and that the geochemical data imply the tephra is not from Thera.

Received 23 July 2003; accepted 29 September 2003; published 15 November 2003.

Index Terms: 8404 Volcanology: Ash deposits; 1094 Geochemistry: Instruments and techniques; 3299 Mathematical Geophysics: General or miscellaneous.

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Citation: Keenan, D. J. (2003), Volcanic ash retrieved from the GRIP ice core is not from Thera, Geochem. Geophys. Geosyst., 4(11), 1097, doi:10.1029/2003GC000608.