评估紫激发光协议的定年潜力

IF 1.2 4区地球科学 Q3 Earth and Planetary Sciences

Geochronometria Pub Date : 2020-05-26 DOI:10.1515/geochr-2015-0115

Mariana Sontag-González, M. Frouin, Bo Li, J. Schwenninger

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引用次数: 5

摘要

摘要紫激发是光学测年的一个新进展，它被认为可以延长石英光学模拟发光测年的年龄上限。尽管报道了这种优势，但到目前为止，很少有验证测试和应用发表。本研究使用单等分再生剂量（SAR）方案和多等分添加剂量（MAAD）方案研究了紫激发光（VSL）。使用了来自欧洲四个考古遗址的沉积石英样品，这些遗址的独立年龄控制范围为40-900 ka，包括Grotte Mandrin（法国）、Brooksby Quarry（英国）、Cueva Negra del Estreco del Río Quípar（西班牙）和Sima de las Palomas del Cabezo Gordo（西班牙）。成功测定了相对年轻的样品（～40ka）的等效剂量。然而，对于具有较高剂量的较老样本，观察到明显的低估。这些发现表明，有必要进一步开发迄今为止高剂量天然样品的测量方案。

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Assessing the Dating Potential of Violet Stimulated Luminescence Protocols

Abstract Violet stimulation is a new development in optical dating which has been suggested to extend the upper age limit of optically simulated luminescence (OSL) dating of quartz. Despite the reported advantage, few validation tests and applications have been published so far. The present study investigated the violet stimulated luminescence (VSL) using a single aliquot regenerative dose (SAR) protocol and a multiple aliquot additive dose (MAAD) protocol. Sedimentary quartz samples from four archaeological sites in Europe with independent age controls spanning 40–900 ka were used, including Grotte Mandrin (France), Brooksby Quarry (UK), Cueva Negra del Estrecho del Río Quípar (Spain) and Sima de las Palomas del Cabezo Gordo (Spain). The equivalent dose of a relatively young sample (∼40 ka) was successfully determined. However, significant underestimations were observed for older samples with higher doses. These findings indicate the need for further development of the measurement protocol to date high-dose natural samples.

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来源期刊

Geochronometria 地学-地球科学综合

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Geochronometria is aimed at integrating scientists developing different methods of absolute chronology and using them in different fields of earth and other natural sciences and archaeology. The methods in use are e.g. radiocarbon, stable isotopes, isotopes of natural decay series, optically stimulated luminescence, thermoluminescence, EPR/ESR, dendrochronology, varve chronology. The journal publishes papers that are devoted to developing the dating methods as well as studies concentrating on their applications in geology, palaeoclimatology, palaeobiology, palaeohydrology, geocgraphy and archaeology etc.