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Exploring multiple-aliquot methods for quartz violet stimulated luminescence dating

机译：探索石英紫罗兰刺激的发光约会的多等等分方法

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摘要

In the pursuit of extending the dating range of quartz, violet stimulated luminescence (VSL) has been proposed as a possible candidate. VSL samples traps deeper than those accessible by blue stimulated luminescence (BSL), the latter often limited to the past 100 ka. This study investigates 51 samples from three different type sections in the central part of the Chinese Loess Plateau with depositional ages between 1 and 2500 ka. Results indicate that the natural VSL signal grows to similar to 2700 Gy, is best fitted with a double saturating exponential plus a constant, and its shape can be reproduced with the MAAD protocol. Using a similar to 900 ka sample, the bleaching decay is recorded over 53 days of light exposure in a solar simulator to further understand the origin of the VSL signal, and to test a multiple-aliquot regenerative (MAR) protocol. The results of the MAAD and the MAR protocols are evaluated against the independent age control. For samples between 20 and 900 ka, 74% were in agreement with expected age using the MAAD protocol. The MAR protocol was tested by building dose response curves (DRCs) using two samples with ages of similar to 75 ka and similar to 900 ka. Ages calculated by interpolating natural signals onto these two DRCs for all samples within the same 20-900 ka range show 45% and 81% agreement, respectively, with independent age control. The MAR protocol obtained a similar to 900 ka VSL age in agreement with independent age control within 1 sigma of joint uncertainties.
机译：在追求延长石英的约会范围，已提出紫罗兰刺激的发光（VSL）作为可能的候选者。 VSL样本比蓝色刺激的发光（BSL）捕获的样本陷阱更深入，后者通常限于过去100 ka。本研究研究了中国黄土高原中央部分的三种不同类型部分的51个样本，沉积年龄在1到2500 ka之间。结果表明，天然VSL信号增长到2700GY，最好用双饱和指数加上恒定，其形状可以用MAAD协议再现。使用类似于900 ka样品，漂白衰减在太阳模拟器中录制53天的光曝光，以进一步了解VSL信号的起源，并测试多等份再生（MAR）协议。根据独立年龄控制评估Maad和MAR协议的结果。对于20至900ka之间的样本，使用MAAD协议，74％与预期年龄一致。通过使用两个类似于75 ka的样品构建剂量响应曲线（DRC）来测试MAR方案，并类似于75 ka，类似于900 ka。通过将自然信号插入到这两个DRC上的所有样品中的所有样品中的所有样品分别计算出45％和81％的协议，分别通过独立年龄控制来计算。 MAR协议获得了类似于900 kA VSL年龄，同时与联合不确定因素的1 Sigma内的独立年龄控制。

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