Volcanic ash layers from the Last Glacial Termination in the NGRIP ice core
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Date of Publication
2005
Publication Type
Article
Division/Institute
Contributor
Mortensen, Anette K. | |
Grönvold, Karl | |
Steffensen, Jørgen P. | |
Johnsen, Sigfús J. |
Subject(s)
Series
Journal of quaternary science JQS
ISSN or ISBN (if monograph)
0267-8179
Publisher
John Wiley & Sons, Ltd.
Language
English
Publisher DOI
BORIS DOI
Description
The tephrochronological record of the 1400–1640 m depth (∼10 000–16 000 calendar ice core years before present) of the NGRIP ice core has been established by particle screening of selected samples. Ash was identified in 20 samples. Correlation with ice, marine and terrestrial records from volcanic source regions in the northern hemisphere positively identifies the Saksunarvatn Ash and the Vedde Ash (Ash Zone 1). Major element chemistry of the remaining identified ash layers mainly points towards an Icelandic origin. This tephrochronological record provides new important marker horizons for correlating the timing of the climatic changes associated with the Last Glacial Termination within the North Atlantic region, as well as outlining more details concerning the frequency and composition of volcanic eruptions occurring at this deglaciation.
File(s)
File | File Type | Format | Size | License | Publisher/Copright statement | Content | |
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mortensen05jqs.pdf | Adobe PDF | 644.28 KB | publisher | published |