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Article Dans Une Revue Scientific Reports Année : 2018

Towards reconstruction of the lost Late Bronze Age intra-caldera island of Santorini, Greece

Dávid Karátson
  • Fonction : Auteur
Tamás Telbisz
  • Fonction : Auteur
Viktor Vereb
  • Fonction : Auteur
Xavier Quidelleur
Timothy Druitt
Szabolcs Kósik
  • Fonction : Auteur

Résumé

During the Late Bronze Age, the island of Santorini had a semi-closed caldera harbour inherited from the 22 ka Cape Riva Plinian eruption, and a central island referred to as ‘Pre-Kameni’ after the presentday Kameni Islands. Here, the size and age of the intracaldera island prior to the Late Bronze Age (Minoan) eruption are constrained using a photo-statistical method, complemented by granulometry and high-precision K-Ar dating. Furthermore, the topography of Late Bronze Age Santorini is reconstructed by creating a new digital elevation model (DEM). Pre-Kameni and other parts of Santorini were destroyed during the 3.6 ka Minoan eruption, and their fragments were incorporated as lithic clasts in the Minoan pyroclastic deposits. Photo-statistical analysis and granulometry of these lithics, differentiated by lithology, constrain the volume of Pre-Kameni to 2.2–2.5 km3. Applying the Cassignol- Gillot K-Ar dating technique to the most characteristic black glassy andesite lithics, we propose that the island started to grow at 20.2 ± 1.0 ka soon after the Cape Riva eruption. This implies a minimum longterm lava extrusion rate of ~0.13–0.14 km3/ky during the growth of Pre-Kameni.

Domaines

Volcanologie
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Dates et versions

hal-01789521 , version 1 (27-12-2020)

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Paternité - Pas de modifications

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Dávid Karátson, Ralf Gertisser, Tamás Telbisz, Viktor Vereb, Xavier Quidelleur, et al.. Towards reconstruction of the lost Late Bronze Age intra-caldera island of Santorini, Greece. Scientific Reports, 2018, 8 (1), ⟨10.1038/s41598-018-25301-2⟩. ⟨hal-01789521⟩
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