| 摘要: |
| 中国黄土释光测年走过了近40年的历程，这对于推动释光测年技术的进步和黄土古气候古环境研究的深入有重要意义。本文针对中国黄土（以黄土高原为主），简要回顾了以多片法混合矿物热释光（TL）和红外释光（IRSL）测年技术为主的早期（20世纪70年代末期至21世纪第一个十年初期）探索阶段的发展，重点阐述了以成熟的单片再生剂量（SAR）法石英光释光（OSL）技术和延长测年年限的多种方法并存为特征的目前（21世纪以来）研究进展。同时，系统论述了释光测年技术在晚更新世以来中国黄土古气候古环境研究中的意义，如在年代标尺建立、粉尘堆积速率变化重建、地层对比与划分、轨道和亚轨道尺度气候演变与气候事件揭示等方面的应用。另外，也对将来中国黄土释光测年技术的发展方向和其在古气候古环境研究领域的应用前景进行了简单展望。 |
| 关键词: 中国黄土 释光测年 晚更新世 石英OSL 年代标尺 |
| DOI：10.7515/JEE201605002 |
| CSTR： |
| 分类号: |
| 基金项目:国家重大科学研究计划（2013CB955901，2016YFA0601902）；国家自然科学基金项目（41290254）；中国科学院西部之光项目 |
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| Luminescence dating of Chinese loess and its applications: past, present and future |
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KANG Shugang, WANG Xulong, WANG Songna1,2
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1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China;2. University of Chinese Academy of Sciences, Beijing 100049, China
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| Abstract: |
| Background, aim, and scope It has been approximately forty years since the early luminescence dating of Chinese loess. Numerous efforts have been contributed to the luminescence dating technique development and its paleoclimate applications into Chinese loess. Thus, at this stage, it is important to present a systematic summary of the development of luminescence dating technique and its application into Chinese loess. Materials and methods This paper provides an overview and perspective of luminescence dating of Chinese loess and its applications in palaeoclimate area in the past approximately forty years. Results The luminescence dating development during early stage (1970s — 2000s), which dominates by multiple-aliquot thermoluminescence (TL) and infrared stimulated luminescence (IRSL) dating of polymineral grains, will be briefly summarized. This paper will focus on the present (since 2000s) single-aliquot regenerative-dose (SAR) quartz optically stimulated luminescence (OSL) dating and other luminescence dating techniques that aim to extend dating limit in Chinese loess. Meanwhile, the applications of luminescence dating of Chinese loess at, such as, chronology construction, dust accumulation rate changes, strata division and correlation, paoleoclimate evolution at orbital and sub-orbital timescales during the Late Pleistocene, are presented here. Discussion Here, advantages and disadvantages on dating material (e.g. quartz, feldspar), luminescence signal and measurement method at different stages are discussed in detail. The potential and shortage of application of luminescence dating into Chinese loess are systematically presented. Conclusions In summary, luminescence dating of Chinese loess has greatly contributed to and will continuously contribute to the development of luminescence dating technique and the research of paleoclimate and plaeoenvironment using Chinese loess. Recommmendations and perspectives In addition, it is suggested that extending luminescence dating range, verifing the reliability of luminescence dating and increasing accuracy of dose rate estimation will be the key study areas in luminescence dating of Chinese loess. And, the potential of luminescence dating into Chinese loess in the future is deduced. |
| Key words: Chinese loess luminescence dating Late Pleistocene quartz OSL chronology |
