The development and application of luminescence dating to loess deposits: a perspective on the past, present and future
The development and application of luminescence dating to loess deposits: a perspective on the past, present and future
复制标题
DOI：
10.1111/j.1502-3885.2008.00057.x
复制
发表时间：
2008-11
期刊：
影响因子：
2.2
通讯作者：
H. Roberts
中科院分区：
文献类型：
--
作者：
H. Roberts
黄土沉积保存了第四纪气候变化和大气尘埃通量的重要记录；然而，只有建立可靠的年表后，它们的全部意义才能被揭示。在过去的 25 年里，我们对黄土-古土壤序列的理解和发光测年技术的发展齐头并进，每个主题都相互促进。本文探讨了黄土沉积物发光测年技术的发展和应用，从早期的热释光 (TL) 到当今使用的光激发光 (OSL) 方法。最近的技术和方法进步导致石英 OSL 年龄的准确度和精确度发生了巨大变化；这导致了高分辨率发光研究的扩展，这反过来又为黄土研究提供了信息，并挑战了有关黄土记录的性质、其形成及其意义的一些基本观点。未来的发光研究工作可能会集中于扩展发光技术的年龄范围，可能通过利用新的发光信号；这再次将允许调查黄土记录的长期变化，并将其与经常进行比较的其他长期气候变化记录进行比较。
Loess deposits preserve important records of Quaternary climate change and atmospheric dust flux; however, their full significance can only be revealed once a reliable chronology is established. Our understanding of loess‐palaeosol sequences and the development of luminescence dating techniques have progressed hand‐in‐hand over the past 25 years, with each subject informing the advancement of the other. This article considers the development and application of luminescence dating techniques to loess deposits from the early days of thermoluminescence (TL) to the optically stimulated luminescence (OSL) methods utilized today. Recent technological and methodological advances have led to a step‐change in the accuracy and precision of quartz OSL ages; this has led to an expansion of high‐resolution luminescence studies, which in turn are informing loess studies and challenging some of the basic ideas regarding the nature of loess records, their formation and their significance. Future luminescence research efforts are likely to focus on extending the age range of luminescence techniques, possibly by utilizing new luminescence signals; this, again, will allow investigation of the long‐term variability of loess records in comparison with other long records of climate change to which they are frequently compared.