Distinguishing quartz and feldspar in single grain luminescence measurements
Distinguishing quartz and feldspar in single grain luminescence measurements
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DOI：
10.1016/s1350-4487(02)00170-1
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发表时间：
2003-04-01
影响因子：
2
通讯作者：
Duller, GAT
中科院分区：
文献类型：
--
作者：
Duller, GAT
单粒发光测年需要一种仅根据其发光行为来区分石英和长石的方法。测试了几种方法，包括光激发发光（OSL）衰减曲线的形状，红外刺激对OSL信号的影响，以及OSL衰减曲线形状和OSL强度随刺激过程中样品温度的变化。其中，最后一种方法需要大量的额外测量，而第一种方法的判别能力很差。区分石英和长石颗粒最有效的方法是在有和没有事先红外刺激的情况下测量OSL信号的比值。这被称为OSL IR损耗比。2003爱思唯尔科学有限公司版权所有。
Luminescence dating of single grains requires a method of distinguishing between quartz and feldspar based solely on their luminescence behaviour. Several methods are tested, including the shape of optically stimulated luminescence (OSL) decay curve, the effect of infrared stimulation upon the OSL signal, and the change in OSL decay curve shape and OSL intensity as a function of the temperature of the sample during stimulation. Of these, the last requires a large number of additional measurements, whilst the first is a poor discriminant. The most efficient means of distinguishing quartz and feldspar grains is by taking the ratio of the OSL signal when measured with and without prior infrared stimulation. This is termed the OSL IR depletion ratio. (C) 2003 Elsevier Science Ltd. All rights reserved.