Advances in Earth Science ›› 2013, Vol. 28 ›› Issue (1): 24-30. doi: 10.11867/j.issn.1001-8166.2013.01.0024

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Research Progress of the Resetting Features of Quartz ESR Signal

Liu Chunru 1, Yin Gongming 1, Rainer Grün 2   

  1. 1.State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration,Beijing100029, China; 2. Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia
  • Received:2012-07-31 Revised:2012-11-30 Online:2013-01-10 Published:2013-01-10

Liu Chunru, Yin Gongming, Rainer Grün. Research Progress of the Resetting Features of Quartz ESR Signal[J]. Advances in Earth Science, 2013, 28(1): 24-30.

 Electron Spin Resonance (ESR) has been becoming one of the key methods of Quaternary Geochronology with wide range of dating, especially for sample older than 200,000 years up to millionyear scale. ESR dating assesses the age of a sample by measuring the equivalent dose and annual dose. The accurate measurement of equivalent dose significantly impacts on accuracy and reliability of ESR dating method. Under ideal conditions, any previous acquired ESR intensity is reset to zero or a stable residual level that can be determined in the laboratory. Therefore, the study of the mechanisms of resetting processes is fundamental for accurate and reliable ESR dating. Since ESR dating method is applicable to the type of geological samples, including hydrothermal quartz veins, geological fault gouge and fluvial sediment, there are large differences in the mechanisms and characteristics of ESR signal resetting. In recent years, to understand the mechanism and characteristics of quartz ESR signal resetting of different geological samples, a series of laboratory simulation and field observation studies were carried out, which made lots of important breakthrough. In this paper, we summarize progress in ESR dating of quartz in Quaternary sediments and studies of resetting mechanisms with particular emphasis on fluvial sediments and prospects for future work.

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