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Thermoluminescence dating of Huguangyan Maar Lake
Source:Leiqiong Global Geopark of China Time:2009-05-12 18:27:19

Author:XIONG Zhengye,TANG Qiang,CHEN Jingmin,ZHENG Bihua,LIANG Xuemin,MA Weijiang

(l.Science college,Guangdong Ocean University, zhanjiang 524088,China;2.School of Science and Physics Engineering,Sun Yat-sen University,Guangzhou 51027,China)

Key words:Thermoluminescence (TL),Huguangyan Maar Lake,Sensitized effect of Quartz,Dating CLC O483,TL99.K854

Abstract:

Based on the thermoluminescence(TL) data, the ancient dose in volcanic rocks near Huguangyan Maar Lake was calculated with sensitized revise technique.The cumulate dose for 78d in TL dosimeters placed in grottos was measured and the annual dose in volcanic rocks was reckoned.Based on the results of the ancient dose and the annual dose,the time of the volcnao eruption to form Hugunagyan Maar Lake is estimated before about(158±29)ka, and this is consistent with the acknowledged result.The results indicate that the Coarse—grain TL technique can be used for Quaternary period dating if the sensitized effect of quartz is taken into account.

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