Piva, Stephen B; Barker, Simon J; Iverson, Nels A; Winton, V Holly L; Bertler, Nancy A N; Sigl, Michael; Wilson, Colin J N; Dunbar, Nelia W; Kurbatov, Andrei V; Carter, Lionel; Charlier, Bruce L A; Newnham, Rewi M (2023). Volcanic glass from the 1.8 ka Taupō eruption (New Zealand) detected in Antarctic ice at ~ 230 CE. Scientific Reports, 13(1), p. 16720. Nature Publishing Group 10.1038/s41598-023-42602-3
|
Text
s41598-023-42602-3.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (2MB) | Preview |
Chemical anomalies in polar ice core records are frequently linked to volcanism; however, without the presence of (crypto)tephra particles, links to specific eruptions remain speculative. Correlating tephras yields estimates of eruption timing and potential source volcano, offers refinement of ice core chronologies, and provides insights into volcanic impacts. Here, we report on sparse rhyolitic glass shards detected in the Roosevelt Island Climate Evolution (RICE) ice core (West Antarctica), attributed to the 1.8 ka Taupō eruption (New Zealand)-one of the largest and most energetic Holocene eruptions globally. Six shards of a distinctive geochemical composition, identical within analytical uncertainties to proximal Taupō glass, are accompanied by a single shard indistinguishable from glass of the ~25.5 ka Ōruanui supereruption, also from Taupō volcano. This double fingerprint uniquely identifies the source volcano and helps link the shards to the climactic phase of the Taupō eruption. The englacial Taupō-derived glass shards coincide with a particle spike and conductivity anomaly at 278.84 m core depth, along with trachytic glass from a local Antarctic eruption of Mt. Melbourne. The assessed age of the sampled ice is 230 ± 19 CE (95% confidence), confirming that the published radiocarbon wiggle-match date of 232 ± 10 CE (2 SD) for the Taupō eruption is robust.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Climate and Environmental Physics 10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR) |
UniBE Contributor: |
Sigl, Michael |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry 500 Science > 550 Earth sciences & geology |
ISSN: |
2045-2322 |
Publisher: |
Nature Publishing Group |
Funders: |
[18] European Research Council |
Projects: |
[1314] Timing of Holocene volcanic eruptions and their radiative aerosol forcing |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
10 Oct 2023 10:19 |
Last Modified: |
29 Oct 2023 02:25 |
Publisher DOI: |
10.1038/s41598-023-42602-3 |
PubMed ID: |
37813875 |
BORIS DOI: |
10.48350/187042 |
URI: |
https://boris.unibe.ch/id/eprint/187042 |
Actions (login required)
 |
Edit item |