Evaluating isothermal thermoluminescence and thermally transferred optically stimulated luminescence for dating of Pleistocene sediments in Amazonia
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- 作者：Fabiano do Nascimento Pupim ; fabianopupim@usp.br" class="auth_mail" title="E-mail the corresponding author ; André ; Oliveira Sawakuchi ; Thays Desire Mineli ; Luciana Nogueira
- 关键词：Luminescence dating ; TT-OSL ; ITL ; Amazonia paleogeography
- 刊名：Quaternary Geochronology
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：36
- 期：Complete
- 页码：28-37
- 全文大小：2126 K
文摘
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Quartz ITL and TT-OSL signals were tested for dating of Amazonian sediments.
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TT-OSL and ITL signals of quartz were well bleached in the modern sediments.
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TT-OSL signal showed higher saturation doses and better results to determine burial ages.
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Age uncertainties may result from dose rate changes through time.
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The Xingu River had bottom channel 15–25 m higher than the current level during the Middle Pleistocene.