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Athanassas C. D., Bourles D. L., Braucher R., Druitt T. H., Nomikou P., Leanni Laetitia. (2016). Evidence fromcosmic ray exposure (CRE) dating for the existence of a pre-Minoan caldera on Santorini, Greece. Bulletin of Volcanology, 78 (5), p. art. 35 [13 p.]. ISSN 0258-8900.

Titre du document
Evidence fromcosmic ray exposure (CRE) dating for the existence of a pre-Minoan caldera on Santorini, Greece
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000376278700002
Auteurs
Athanassas C. D., Bourles D. L., Braucher R., Druitt T. H., Nomikou P., Leanni Laetitia
Source
Bulletin of Volcanology, 2016, 78 (5), p. art. 35 [13 p.] ISSN 0258-8900
Cosmic ray exposure (CRE) datingwas performed on the caldera cliffs of Santorini with the aim of detecting cliff segments predating the Minoan eruption (17th century BCE). The methodology involved the determination of in situ-produced cosmogenic Cl-36 concentration in basaltic-torhyodacitic whole rocks cropping out in the cliffs. After the samples were processed following the chemical protocol of Cl-36 preparation for silicate rocks, Cl-36 concentrations were measured by accelerator mass spectrometry (AMS). Important challenges during the implementation procedure were related to large amounts of radiogenic Cl-36, complex modeling of inherited Cl-36, and dominance of the thermal and epithermal (low-energy) neutron capture production pathway. Nevertheless, quantitative assessments on the basis of the contribution of the lowenergy neutron capture pathway percent to the total production rate validated the calculated CRE dates. Current CRE ages demonstrate that an ancient caldera existed on pre-Minoan Santorini, occupying at least the northern half of the modern-day caldera.
Plan de classement
Géologie et formations superficielles [064] ; Géophysique interne [066]
Description Géographique
GRECE
Localisation
Fonds IRD [F B010066908]
Identifiant IRD
fdi:010066908
Contact