Identification of the Changbaishan 'Millennium' (B-Tm) eruption deposit in the Lake Suigetsu (SG06) sedimentary archive, Japan: Synchronisation of hemispheric-wide palaeoclimate archives

QUATERNARY SCIENCE REVIEWS

卷:150

Article

McLean, Danielle¹  Albert, Paul G.¹  Nakagawa, Takeshi^2,3  Staff, Richard A.¹  Suzuki, Takehiko⁴  Smith, Victoria C.¹ 

[1] Univ Oxford, Res Lab Archaeol & Hist Art, Oxford OX1 3QY, England

[2] Newcastle Univ, Dept Geog, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[3] Ritsumeikan Univ, Res Ctr Palaeoclimatol, Kyoto 6038577, Japan

[4] Tokyo Metropolitan Univ, Dept Geog, Tokyo 1920397, Japan

关键词: Tephrochronology;    Changbaishan 'Millennium' eruption;    B-Tm tephra;    Lake Suigetsu;    Bayesian age-modelling;   

DOI  :  10.1016/j.quascirev.2016.08.022

来源: Elsevier

【 摘 要 】

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. (C) 2016 The Authors. Published by Elsevier Ltd.

【 授权许可】

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