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The potential of portable luminescence readers in geomorphological investigations: a review
Earth Surface Processes and Landforms ( IF 3.3 ) Pub Date : 2020-08-10 , DOI: 10.1002/esp.4975
Kennedy Munyikwa 1 , Tim C. Kinnaird 2 , David C.W. Sanderson 3
Affiliation  

The development of functional portable optically stimulated luminescence (OSL) readers over the last decade has provided practitioners with the capability to acquire luminescence signals from geological materials relatively rapidly, which allows for expedient preliminary chronostratigraphic insight when working with complex depositional systems of late Quaternary age. Typically, when using the portable OSL reader, infrared (IR) or blue post‐IR OSL signals are acquired from bulk unprocessed materials, in contrast to regular luminescence dating, which is usually based on measurements on pure quartz or feldspar mineral separates, or on select silt‐sized polymineralic portions. To demonstrate the utility of portable OSL measurements, this paper outlines the basic features of portable OSL readers and their constraints. Subsequently, case studies in which the instrument has been used to elucidate cryptostratigraphic variations in sedimentary sequences for geomorphological applications are reviewed. The studies can generally be grouped into three main categories. The first includes studies where the variation of portable OSL reader luminescence signal intensities with depth are plotted to generate profiles that contextualize sediment stratigraphy. In the second group, portable OSL reader luminescence signal intensities are used to interpret sediment processes that shed light on depositional histories. In the last category, luminescence signals from the portable OSL reader are calibrated to approximate numerical burial ages of depositional units. The paper concludes with a discussion of possible future directions. © 2020 John Wiley & Sons, Ltd.

中文翻译:

便携式发光阅读器在地貌学研究中的潜力:综述

在过去的十年中,功能性便携式光学激发发光(OSL)阅读器的发展为从业人员提供了从地质材料中快速获取发光信号的能力,这使得在处理第四纪晚期的复杂沉积系统时可以方便地进行初步地层地层学研究。通常,当使用便携式OSL读取器时,红外(IR)或蓝色后红外OSL信号是从未经处理的大块材料中获取的,这与常规发光测年法不同,后者通常基于对纯石英或长石矿物分离物或选择粉砂大小的多矿物部分。为了演示便携式OSL测量的实用性,本文概述了便携式OSL阅读器的基本功能及其约束。后来,回顾了一些案例研究,其中使用了该仪器来阐明地貌序列中沉积序列的密码地层变化。这些研究通常可以分为三大类。第一部分包括研究,其中绘制了便携式OSL阅读器发光信号强度随深度的变化图,以生成与沉积物地层相关的轮廓。在第二组中,便携式OSL读取器的发光信号强度用于解释沉积过程,这些沉积过程为沉积历史提供了线索。在最后一类中,来自便携式OSL读取器的发光信号被校准为近似于沉积单位的数字埋葬年龄。本文最后讨论了可能的未来方向。分级为4 +©2020 John Wiley&Sons,Ltd.
更新日期:2020-08-10
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