Toba Caldera geochronological and modelling dataset

Adonara Mucek, Martin Danisik, Shanaka De Silva, Daniel Miggins, Axel Schmitt, Indyo Pratomo, Anthony Koppers & Jack Gillespie
Bayesian statistical analysis and inverse thermal history modeling of feldspar 40Ar/39Ar and zircon (U-Th)/He ages reveal that post-caldera dome eruptions at Toba Caldera, Sumatra occurred up to ca. 13.6 kyr later than indicated by 40Ar/39Ar feldspar ages. This discordance implies cold storage of feldspar antecrysts prior to eruption for a maximum duration of ca. 5 and 13 kyr at between 280°C and 500°C. These findings connote that the solidified carapace of remnant magma after the...
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