OPTICAL DATING - PRELIMINARY-RESULTS ON THE ANOMALOUS FADING OF LUMINESCENCE FROM FELDSPARS

被引：104

作者：

SPOONER, NA

机构：

[1] Research Laboratory for Archaeology and the History of Art, Oxford University, Oxford, OX1 3QJ

来源：

QUATERNARY SCIENCE REVIEWS | 1992年 / 11卷 / 1-2期

关键词：

D O I：

10.1016/0277-3791(92)90055-D

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Luminescence emitted from various beta dosed alkali feldspars and plagioclase feldspars has been measured under optical stimulation. The luminescence sensitivities were compared as the initial stage of an on-going study of short-term anomalous fading of the optically stimulated luminescence (OSL) signal. Anomalous fading was observed in the luminescence stimulated by both green light (514.5 nm) and IR (880-DELTA-80 nm) from samples representing each of the major compositional regimes of the feldspar series. Means of alleviating the influence of this fading in luminescence dating applications are under investigation, particularly the effect of isothermal storage at 100-degrees-C. Initial findings show that anomalous fading in these samples does not lead to a stable remanent level within the storage times used. A practical consequence is that use of a fading monitoring procedure is strongly recommended in optical dating.

引用

页码：139 / 145

页数：7

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