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Yin Gongming and others of the Institute of Geology Attended the 4th Asian Pacific Luminescence and ESR Dating Conference in Australia

2016/6/7 14:31:16

Research Professor Yin Gongming, Associate Research Professor Liu Chunru, Associate Research Professor Liu Jinfeng, Doctor Yang Huili and Doctor Qin jintang went toUniversity of Adelaide, Australia andattendedacademic conference of the 4thAsian-Pacific Luminescence and ESR Dating from November 21thto 26th, 2015. This conference was organized by the Institute for Optics and Advanced Induction Materials and the Institute for Environment, University of Adelaide. Prof Nigel Spooner is the convener of the conference.

The researchers of our Institute exhibited their achievements in luminescence and ESR dating at the conference. Research Professor Yin Gongming made a report titled “Slip rate estimate on the Gyaring Co Fault in central Tibet: constraints from Late Quaternary OSL dating”, introducing the recent result of applying luminescence dating to obtain fault slip rate along Gyaring Co fault in the interior of Tibet Plateau. Associate research Professor Liu Chunru made a report titled “ESR dating of the Hougou paleolithic site in the Nihewan Basin, North China”, introducing the application of ESR dating in sediment dating and discussing issues about fitting and calculation of equivalent dose. Associate research professor Liu Jinfeng made a report titled “Investigating the effect of test dose and first IR stimulation temperature on post-IR IRSL measurements of rock slices”, introducing the research progress of extraction of luminescent signals during luminescence dating of rock exposure age; Dr. Yang Huili made a report titled “Coarse- versus fine-grain OSL dating of the deposition along the Ms7.4 1985 Wuqia earthquake surface ruptures at the NE margin of the Pamir Syntaxis”, introducing the application of luminescence dating of quartz mineral with different size in earthquake-related sediment dating and discussing the practicability of quartz mineral luminescence dating in earthquake-related sediments; Dr. Qin Jintang made a report titled “Can we date the earthquakes of the last millennium along the Altyn Tagh Fault (ATF) via IRSL signals”, introducing the progress of exploring the feasibility of applying potash feldspar luminescence dating technology to determine the age of young earthquake events in Altyn Tagh Fault.

A highlight of this conference is measurement of annual radiation dose rate in an uneven radiation environment and establishment of a calculation system. The research team led by Prof Norbert Mercier from French University of Bordeaux introduced “DosiVox” software developed by them in pre-conference training class and series oral reports. By using the information of mineral phase and mineral granularity obtained from quantitative electron microscope scanning (QEMSCAN) and information of radionuclide concentration determined by in-situ LA-ICP-MS, the spatial distribution of β ray irradiation dose rate in an uneven radiation environment can be obtained through calculation of “DosiVox”. At present, Neotectonic Chronology Laboratory and Luminescence and ESR Dating Laboratory of the Institute of Geology both carry out research of thermochronology and exposure age of bed rock, while the unevenness of dose rate of bed rock samples is one of the technical challenges. The research progress of international peers we learnt at this meeting will help the research personnel of the Institute of Geology push ahead the implementation of relevant tasks.

At breaks of conference reports, the organizer also organized the people attending the meeting to visit a laboratory relevant with luminescence research in University of Adelaide. This laboratory does the work of luminescence dating and meanwhile pays attention to physical mechanism of luminescence process and R&D of luminescence dating instruments. The advanced equipment of the laboratory and the possibility of carrying out research at all levels deeply impressed our researchers. Particularly, the spatial distribution and meticulous design of the laboratory enlighten us in further improvement of related laboratories of the Institute of Geology. Researcher Lu Yanchou ever did cooperative research in this laboratory 30 years ago. During meeting, people including Yin Gongming communicated with the researchers of University of Adelaide in future cooperative research and reached a preliminary intent of cooperation.

By attending this meeting, the Institute of Geology exhibited its achievements in the aspect of Luminescence and ESR dating, raised the international influence of luminescence and ESR Dating Laboratory and can quickly integrate international frontier of the discipline and technical progress with its current research, thus it help us to realize further improvement and establish relation to famous international laboratories. 

The first Asian Pacific Luminescence and ESR Dating Conference was held in University of Hong Kong in 2006. The conference is held once every three years. Next conference will be held in Peking University in 2018.