湖光岩玛尔湖的热释光断代  

Thermoluminescence dating of Huguangyan Maar Lake

作　　者：熊正烨[1] 唐强[2] 陈劲民[1] 郑碧华[1] 梁学敏[1] 马卫江[2] 

机构地区：[1]广东海洋大学理学院,湛江524088 [2]中山大学理工学院,广州510275

出　　处：《核技术》2009年第4期277-280,共4页Nuclear Techniques

基　　金：国家自然科学基金(10505033);广东海洋大学科研基金资助

摘　　要：根据热释光测量结果,用敏化修正法计算湖光岩玛尔湖周围岩洞内的岩样古剂量。用热释光剂量片测量岩洞内78d累积剂量来推算年剂量率,进而推算出湖光岩火山爆发在(15.8±2.9)万年前与公认结果一致。这表明用粗颗粒热释光法测量第四纪岩样的古剂量时,须考虑石英的敏化效应,此方法可用于第四纪火山岩样的断代。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 78 d 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 volcano eruption to form Huguangyan Maar Lake is estimated before about （15.8±2.9） 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.

关 键 词：热释光 湖光玛尔湖 石英敏化效应 考古 

分 类 号：O483[理学—固体物理] TL99[理学—物理]