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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10167

Authors: Tema, E.*
Zanella, E.*
Pavón-Carrasco, F. J.*
Kondopoulou, D.*
Pavlides, S.*
Title: Palaeomagnetic analysis on pottery as indicator of the pyroclastic flow deposits temperature: new data and statistical interpretation from the Minoan eruption of Santorini, Greece
Other Titles: Palaeomagnetic analysis on pottery, Santorini
Title of journal: Geophysical Journal International
Series/Report no.: /203(2015)
Publisher: Wiley-Blackwell
Issue Date: 16-Jun-2015
DOI: 10.1093/gji/ggv267
Keywords: Archaeomagnetism
Rock and mineral magnetism
Volcaniclastic deposits
Abstract: We present the results of palaeomagnetic analysis on Late Bronge Age pottery from Santorini carried out in order to estimate the thermal effect of the Minoan eruption on the pre-Minoan habitation level. A total of 170 specimens from 108 ceramic fragments have been studied. The ceramics were collected from the surface of the pre-Minoan palaeosol at six different sites, including also samples from the Akrotiri archaeological site. The deposition temperatures of the first pyroclastic products have been estimated by the maximum overlap of the re-heating temperature intervals given by the individual fragments at site level. A new statistical elaboration of the temperature data has also been proposed, calculating at 95 per cent of probability the re-heating temperatures at each site. The obtained results show that the precursor tephra layer and the first pumice fall of the eruption were hot enough to re-heat the underlying ceramics at temperatures 160–230 ◦C in the non-inhabited sites while the temperatures recorded inside the Akrotiri village are slightly lower, varying from 130 to 200 ◦C. The decrease of the temperatures registered in the human settlements suggests that there was some interaction between the buildings and the pumice fallout deposits while probably the buildings debris layer caused by the preceding and syn-eruption earthquakes has also contributed to the decrease of the recorded re-heating temperatures.
Appears in Collections:05.02.03. Volcanic eruptions
04.08.08. Volcanic risk
04.05.07. Rock magnetism
04.05.06. Paleomagnetism
Papers Published / Papers in press

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