| 球粒陨石的冲击作用与热释光特征研究 |
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| 引用本文： | 刘京发,李大红.球粒陨石的冲击作用与热释光特征研究[J].大地构造与成矿学,1999,23(3):262-266. |
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| 作者姓名： | 刘京发 李大红 |
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| 作者单位： | 1. 中国科学院广州地球化学研究所,广东,广州,510640
2. 中国工程物理研究院流体物理研究所,四川,成都,610003 |
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| 摘 要： | 测定了我国部分球粒陨石的自然热释光峰温、峰半高宽度和灵敏度， 强冲击型陨石的热释光灵敏度偏低，峰温、峰半高宽温度则偏高。岩庄陨石属天然冲击球粒陨石，具有强烈的冲击特征。测定岩庄陨石两种不同颜色冲击脉体的热释光，其强度明显地不一样，并发现该陨石的热释光具有β辐照诱发热释光位移和退火热释光位移现象。冲击作用明显地改变着热释光的各种特性。
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| 关 键 词： | 球粒陨石 热释光 冲击作用 位移 |
| 文章编号： | 1001－1552(1999)03－0262－05 |
A STUDY ON SHOCK EFFECT AND TL CHARACTERISTICS OF CHONDRITE |
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| LIU Jing-fa,LI Da-hong.A STUDY ON SHOCK EFFECT AND TL CHARACTERISTICS OF CHONDRITE[J].Geotectonica et Metallogenia,1999,23(3):262-266. |
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| Authors: | LIU Jing-fa LI Da-hong |
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| Abstract: | The thermoluminescence(TL)properties of Chinese 11H,6L and 3LL chondrites have been measured.TL peak temperature and peak width of shocked chondrites are higher and TL sensitivity are lower than those of ordinary chondrites.Yanzhuang belongs to a strongly shocked meteorite.Two special TL phenomena have been found in Yanzhuang meteorite through the determination of the natural TL,annealed TL and induced TL by β radiation: 1.When the sample of Yanzhuang meteorite is annealed at temperature up to 500℃,the TL peak induced by β rays moves to lower temperature with the increasing of irradiation dose; 2.When the annealed temperature is greater than 600℃,the TL peak temperature of the annealed sample is higher than that of the unannealed sample.The shock effect change TL characteristics of chondrite. |
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| Keywords: | chondrite TL shock effect shift |
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