10.5061/DRYAD.9P8CZ8WGS
Mucek, Adonara
0000-0001-9261-6707
Oregon State University
Danisik, Martin
Curtin University
de Silva, Shanaka
0000-0002-0310-5516
Oregon State University
Miggins, Daniel
Oregon State University
Schmitt, Axel
Heidelberg University
Pratomo, Indyo
Geological Agency of Indonesia
Koppers, Anthony
Oregon State University
Gillespie, Jack
Curtin University
Toba Caldera geochronological and modelling dataset
Dryad
dataset
2021
FOS: Earth and related environmental sciences
(U-Th)/He
40Ar/39Ar
thermochronology
Bayesian analyses
Toba Caldera
cold magma storage
warm magma storage
resurgence
National Science Foundation
https://ror.org/021nxhr62
EAR 1445634
National Science Foundation
https://ror.org/021nxhr62
EAR 1551187
National Science Foundation
https://ror.org/021nxhr62
1314109-DGE
Australian Research Council
https://ror.org/05mmh0f86
DP160102427
2021-09-06T00:00:00Z
2021-09-06T00:00:00Z
en
https://doi.org/10.1038/s43247-021-00260-1
https://doi.org/10.5281/zenodo.5436490
609851 bytes
5
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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 Youngest Toba Tuff
(YTT) eruption ~74 ka erupted in a subsolidus state, without being
thermally remobilized or rejuvenated. Our data mean that resurgent uplift
and volcanism initiated approximately 5 kyrs after the climactic YTT
eruption, thus providing rare constraints on resurgence after a
cataclysmic supereruption. Our approach has the potential to reveal
complexities in pre-eruptive storage and eruption at unprecedented
temporal resolution with implications for active restless calderas and
young silicic volcanoes worldwide.