SEISMOLOGY AND GEOLOGY ›› 2017, Vol. 39 ›› Issue (1): 183-192.DOI: 10.3969/j.issn.0253-4967.2017.01.014

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RESEARCH PROGRESS ON LUMINESCENCE DATING OF ROCK SURFACES AND ITS APPLICATION

LUO Ming, CHEN Jie, LIU Jin-feng   

  1. State Key Lab of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029 China
  • Received:2016-02-29 Revised:2016-10-13 Online:2017-02-20 Published:2017-04-26

岩石暴露与埋藏面释光测年进展及其应用

罗明, 陈杰, 刘进峰   

  1. 中国地震局地质研究所, 地震动力学国家重点实验室, 北京 100029
  • 通讯作者: 陈杰,研究员,E-mail:chenjie@ies.ac.cn
  • 作者简介:罗明,男,1989年生,2016年于中国地震局地质研究所获构造地质学硕士学位,主要从事光释光年代学、活动构造等方面的研究,电话010-62009243,E-mail:lm618655@163.com
  • 基金资助:

    中国地震局地质研究所基本科研业务专项(IGCEA1417)与地震动力学国家重点实验室自主研究课题(LED2013A09)共同资助

Abstract:

There are many examples of exposed or buried rock surfaces whose age is of interest to geologists and archaeologists. Luminescence dating is a well-established method of absolute chronology which has been successfully applied to a wide range of fine-grained sediments from hundreds of years to several hundred thousand years. Optical stimulated luminescence (OSL) has been recently proposed as a new method to date these rock surfaces (Laskariset al., 2011; Sohbatiet al., 2012a; Chapotet al., 2012; Pedersonet al., 2014; Sohbatiet al., 2015; Freieslebenet al., 2015). The basic principle is that luminescence signal of rock surface will soon decay when the rock is exposed to sunlight. When the rock surface is turned to be buried side, the OSL signal begins to accumulate again. With the variation of residual luminescence with depth, it is possible to estimate exposure and burial history of the rock. This article describes briefly the different luminescence dating methods for rock surfaces, its progress, application examples and present problems. For instance, Sohbatiet al. (2011) studied the depth dependence of the bleaching of the IRSL signal from granitic rocks, Laskaris and Liritzis (2011) proposed a mathematical function to describe the attenuation of daylight into rock surfaces, Sohbatiet al. (2012a) developed their model to include the environmental dose rate, Sohbatiet al. (2012b) overcame the problem of parameter estimation by using a known-age road-cut sample for calibration, Sohbatiet al. (2012c) further developed the OSL surface exposure dating model by including the simultaneous effect of daylight bleaching and environmental dose rate, and so on. These studies indicate that OSL dating method for rock surface can be applied widely to studies of geological and geomorphological evolution, archeology and Quaternary tectonic activity.

Key words: rock surface, exposure age, burial age, OSL, late Quaternary

摘要:

岩石暴露与埋藏面光释光测年是最近提出的一种新测年方法,其测年基本原理是当岩石暴露于太阳光下时,岩石表层的释光信号会被晒退,被晒退的深度随着岩石暴露时间的延长而增加,当岩石暴露面被沉积埋藏后其光释光信号又开始积累。利用岩石暴露(或埋藏)面残留释光信号与暴露(或埋藏)时间和深度的定量关系,就可以估算该岩石的暴露和埋藏年龄及历史。文中简要介绍了不同释光信号测定岩石暴露与埋藏面年龄的方法、进展、应用实例及存在的问题。这些研究实例表明,岩石暴露与埋藏面光释光测年方法在第四纪地质、地貌演化、考古和活动构造研究上可能具有广泛的应用前景。

关键词: 岩石, 暴露年龄, 埋藏年龄, 释光测年, 晚第四纪

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