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Luminescence dating of volcanic eruptions in Datong, northern China

机译：中国北方大同火山喷发的发光年代

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In this study, fine-grain quartz was used for luminescence dating for lava baked samples from different sites in Datong. Optical stimulated luminescence (OSL), thermal transferred OSL (TT-OSL)/recuperated OSL (Re-OSL) and thermoluminescence (ii) dating protocols were applied. For these samples, the OSL signals saturate at about 300-400 Gy, which limits their age to less than 100 ka based on their ambient dose rates. The TT-OSL/Re-OSL method has poor dose recovery. TL dating gives reliable results, and multiple-aliquot regenerative-dose TL method with sensitivity change correction based on the 325 degrees C TL peak of a test dose can be applied for samples up to 400 ka. The results indicate that the ages of the volcanoes in Datong are from 380 ka to 84 ka. The volcanic activity started earlier in the southeast area than those in the northwest part, which is consist with the literature data. (C) 2015 Elsevier B.V. All rights reserved.
机译：在这项研究中，使用大颗粒石英对来自大同不同地点的熔岩烤制样品的发光定年。应用了光激发发光（OSL），热转移OSL（TT-OSL）/累加OSL（Re-OSL）和热发光（ii）约会协议。对于这些样品，OSL信号在约300-400 Gy处饱和，这基于其环境剂量率将其年龄限制为小于100 ka。 TT-OSL / Re-OSL方法的剂量回收率较差。 TL测年可提供可靠的结果，基于等分剂量的325℃TL峰的灵敏度更改校正的多等分再生剂量TL方法可用于最大400 ka的样品。结果表明，大同火山的年龄为380 ka至84 ka。火山活动始于东南地区，早于西北地区，这与文献资料一致。 （C）2015 Elsevier B.V.保留所有权利。

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