Ro, Seokhyun; Hur, Soon Do; Ekaykin, Alexey A; Han, Yeongcheol; Ro, Chul-Un; Hong, Sangbum; Lee, Mi Jung; Chang, Chaewon; Lee, Seungmi; Moon, Jangil; Jung, Hyejin; Veres, Arina N; Lee, Ahhyung; Hong, Sungmin (2025): Major element composition of glass shards from 1458/59 CE cryptotephra in VK22 firn core [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.980746
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-11-03 • DOI registered: 2025-12-02
Abstract:
We present the major element compositions (SiO₂, TiO₂, Al₂O₃, FeO, MgO, CaO, Na₂O, and K₂O) of unpolished micron-sized volcanic glass shards within cryptotephra layers associated with the prominent 1458/59 CE sulfate peak in a shallow firn core (VK22) drilled near the Russian Antarctic Vostok Station in East Antarctica. The measurement was performed by a quantitative scanning electron microscopy–energy dispersive X-ray spectrometry (SEM–EDX) technique using a reverse Monte Carlo simulation combined with a robust successive approximation algorithm, effectively accounting for both matrix and geometric effects and consequently contributing to an accurate determination of characteristic X-ray intensities of specific elements in unpolished glass shards. The results show a bimodal composition of glass shards, corresponding to dacitic and rhyolitic types.
Funding:
Korea Polar Research Institute (KOPRI), grant/award no. PE23905-360-05: Testing hypotheses proposed for forcing mechanisms of the abrupt Younger Dryas onset, ~12,900 years ago, by using chemical proxies in Greenland ice cores
Korea Polar Research Institute (KOPRI), grant/award no. PE25100: Investigating anthropogenic and natural characteristics of atmosphere-ice sheet exchanges using the international deep ice coring network
Russian Science Foundation, grant/award no. 21-17-00246: Climate Variability on the East Antarctic Plateau over the Last 2000 Years
Coverage:
Latitude: -78.470000 * Longitude: 106.840000
Date/Time Start: 2021-12-01T00:00:00 * Date/Time End: 2021-12-01T00:00:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 14
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | ORDINAL NUMBER | Ord No | Ro, Seokhyun | Geocode – Particle No. | ||
| 2 | Particle, diameter | Part diam | µm | Ro, Seokhyun | ||
| 3 | Silicon dioxide | SiO2 | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 4 | Titanium dioxide | TiO2 | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 5 | Aluminium oxide | Al2O3 | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 6 | Iron oxide, FeO | FeO | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 7 | Magnesium oxide | MgO | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 8 | Calcium oxide | CaO | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 9 | Sodium oxide | Na2O | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 10 | Potassium oxide | K2O | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
| 11 | Total | Total | % | Ro, Seokhyun | Scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDX) | wt. % |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
140 data points