Examination of the Denali Ice Cores for Evidence of the Lena Ash Layer and White River Ash east (WRAe) Volcanic Eruptions, Begguya (Mt. Hunter), Alaska
Abstract:
In 2013, two parallel ice cores (commonly referred to as the Denali Ice Cores) were drilled to bedrock on the summit plateau of Begguya, Alaska (62.93 N 151.083 W, 3912 m asl; also known as Mount Hunter). A robust chronology has been developed using a combination of techniques including annual layer counting, sulfate peaks (volcanics), radiocarbon dating and the 1963 atmospheric nuclear weapons testing horizon. Here, we employed tephrochronology practices to isolate and document the presence of the Lena Ash Layer and White River Ash east (WRAe) volcanic eruptions within the ice. We separated tephra from the meltwater and analyzed them using SEM-EDS and EPMA methodologies. The data are not immediately conclusive, and work is still ongoing to understand the findings.
How to cite this dataset:
Brooks, H. L. L., Kurbatov, A., Winski, D. A., Kreutz, K. J., 2027. Examination of the Denali Ice Cores for Evidence of the Lena Ash Layer and White River Ash east (WRAe) Volcanic Eruptions, Begguya (Mt. Hunter), Alaska , Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/113910. Accessed 2025-07-28.
DOI Creation Date:
2025-07-21
License:
Creative Commons Attribution 4.0 International [CC-BY-4.0]
Funding source(s):
National Science Foundation:
2002483Keyword(s):
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: Alaska, Denali National Park, Begguya, Mount Hunter, Denali Ice Cores
User Contributed Keyword(s):
Tephrochronology, volcanoes, tephra, glass, volcanic eruptions, ice, ice cores, glaciers, paleoclimate
Data Available On:
2027-07-17