View : 39 Download: 0

Toward establishing precise 40Ar/39Ar chronologies for Late Pleistocene palaeoclimate archives: An example from the Lake Suigetsu (Japan) sedimentary record

Title
Toward establishing precise 40Ar/39Ar chronologies for Late Pleistocene palaeoclimate archives: An example from the Lake Suigetsu (Japan) sedimentary record
Authors
Smith V.C.Mark D.F.Staff R.A.Blockley S.P.E.Ramsey C.B.Bryant C.L.Nakagawa T.Han K.K.Weh A.Takemura K.Danhara T.
Ewha Authors
김규한
SCOPUS Author ID
김규한scopusscopus
Issue Date
2011
Journal Title
Quaternary Science Reviews
ISSN
0277-3791JCR Link
Citation
vol. 30, no. 21-22, pp. 2845 - 2850
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The varved Suigetsu (SG06) sediment core is potentially one of the most important and well-constrained mid-latitude palaeoclimate archives, recording continuous deposition during the last ∼150 kyrs. Numerous visible and non-visible volcanic ash layers form unique age markers within SG06. These ash layers are too fine and crystal-poor to be directly dated using the 40Ar/39Ar technique so the tephra were correlated to proximal volcanic deposits using their glass shard compositions. A high-precision 40Ar/39Ar sanidine age of 10.0 ± 0.3 ka (1σ, n = 34, MSWD = 0.71, p = 0.89) was obtained for the SG06-1288 (U-Oki) proximal tephra (Ulleungdo U4). 40Ar/39Ar yields a precision of ±3% near the younger limit of the method, with improved precision possible for older SG06 samples. Such 40Ar/39Ar ages for tephra layers can provide invaluable tie-points within the Lake Suigetsu SG06 sequence, giving independent verification of the core's varve chronology, allowing for the calibration of cosmogenic nuclide production, and providing a precise chronology beyond the varve limit. © 2011 Elsevier Ltd.
DOI
10.1016/j.quascirev.2011.06.020
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE