A distinct source and differentiation history for Kolumbo submarine volcano, Santorini volcanic field, Aegean arc.

ABSTRACT: This study reports the first detailed geochemical characterization of Kolumbo submarine volcano in order to investigate the role of source heterogeneity in controlling geochemical variability within the Santorini volcanic field in the central Aegean arc. Kolumbo, situated 15 km to the northeast of Santorini, last erupted in 1650 AD and is thus closely associated with the Santorini volcanic system in space and time. Samples taken by remotely-operated vehicle that were analyzed for major element, trace element and Sr-Nd-Hf-Pb isotope composition include the 1650 AD and underlying K2 rhyolitic, enclave-bearing pumices that are nearly identical in composition (73 wt.% SiO₂, 4.2 wt.% K₂O). Lava bodies exposed in the crater and enclaves are basalts to andesites (52-60 wt.%

SUBMITTER: Klaver M 

PROVIDER: S-EPMC5114867 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature