Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6446319 | Quaternary Science Reviews | 2016 | 7 Pages |
Abstract
The B-Tm tephra, dispersed during the highly explosive Changbaishan 'Millennium' eruption (ca. 940-950 CE) and a key marker layer within the Greenland ice cores, has now been identified in the Lake Suigetsu (SG06) sedimentary sequence, central Japan. The major element geochemistry of the volcanic glasses within this tephra layer are compared to a new glass dataset from the distal type-locality (Tomakomai Port, Hokkaido) and other published 'Millennium' eruption/B-Tm deposits, to verify this correlation. The discovery of the B-Tm tephra in the Lake Suigetsu record provides, to date, the most southerly identification of this ash and, crucially, the first direct tie-point between this high-resolution, mid-latitude palaeoclimate archive and the Greenland ice cores. These findings present significant encouragement for on-going research into the tephrostratigraphy of East Asia, focusing on the identification of widely-dispersed tephra layers which can facilitate the synchronisation of disparate palaeoclimate archives and thus enable the assessment of spatio-temporal variations in past climatic change.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Danielle McLean, Paul G. Albert, Takeshi Nakagawa, Richard A. Staff, Takehiko Suzuki, Suigetsu 2006 Project Members Suigetsu 2006 Project Members, Victoria C. Smith,