Show simple item record S. en_US G. A. T. en_US A. G. en_US M. en_US 2010-04-30T14:08:04Z 2010-04-30T14:08:04Z 2010-06 en_US
dc.identifier en_US
dc.identifier.citation Tsukamoto , S , Duller , G A T , Wintle , A G & Frechen , M 2010 , ' Optical dating of a Japanese marker tephra using plagioclase ' Quaternary Geochronology , vol 5 , no. 2-3 , pp. 274-278 . , 10.1016/j.quageo.2009.02.002 en_US
dc.identifier.other PURE: 149620 en_US
dc.identifier.other dspace: 2160/4630 en_US
dc.description.abstract The luminescence characteristics of volcanic plagioclase from an andesitic tephra (Hakone-Tokyo pumice, Hk-TP) from Japan were studied in order to assess if optical dating of plagioclase could be applied to Quaternary tephra. The tephra was shown to contain two kinds of plagioclase grains, labradorite which had a smooth surface and bytownite with a rough surface. The aliquots consisting of smaller grains contained more bytownite; these showed higher luminescence sensitivity and a higher fading rate compared to the larger-grained aliquots containing only labradorite. The fading rates of both OSL and IRSL signals were similar for each grain size. However, the OSL signal showed severe thermal transfer which made it difficult to use for dating. Using the IRSL signal from grains ranging from 150 to 212 mu m, an age was obtained in agreement with the independent evidence, once a small fading correction had been applied. (C) 2009 Elsevier B.V. All rights reserved. en_US
dc.format.extent 5 en_US
dc.relation.ispartof Quaternary Geochronology en_US
dc.subject Bytownite en_US
dc.subject Tephra en_US
dc.subject FELDSPARS en_US
dc.subject Labradorite en_US
dc.subject Plagioclase en_US
dc.subject IRSL en_US
dc.subject SEDIMENTS en_US
dc.subject Fading en_US
dc.subject SAMPLES en_US
dc.subject Optical dating en_US
dc.subject VOLCANIC ASH en_US
dc.subject LUMINESCENCE en_US
dc.title Optical dating of a Japanese marker tephra using plagioclase en_US
dc.contributor.pbl Institute of Geography & Earth Sciences en_US
dc.contributor.pbl Quaternary Environmental Change Group en_US

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