| 剩磁-温度谱与冷却模式 |
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| 引用本文： | 许同春,D.H.Tarling.剩磁-温度谱与冷却模式[J].地球物理学报,1988,31(3):315-328. |
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| 作者姓名： | 许同春 D.H.Tarling |
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| 作者单位： | 1. 国家地震局地球物理研究所 北京;
2. 英国普利茅斯工业大学地质科学系 |
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| 摘 要： | 本文解释热剩磁和粘滞剩磁的阻挡过程。较慢冷却伴随较低的阻挡温度。一组同一的磁颗粒,其实验室解阻温度不一定等于其磁化成分的阻挡温度。冷却速率不同,重排剩磁量会不同,两者的关系与磁畴状态有关。距烘烤体不同距离采集磁颗粒分布相同的围岩样品,在一定场合下,根据其剩磁-实验室解阻温度谱所示的重排剩磁量的差别,可讨论冷却速度及模型。本文列举苏格兰某些围岩的不同重排剩磁量,讨论有关问题。
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| 关 键 词： | 重排剩磁量 阻挡温度 实验室解阻温度 重叠谱 均衡磁化 |
| 收稿时间： | 1985-04-25 |
REMANENCE-TEMPERATURE SPECTRUM AND COOLING MODEL |
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| XU TONG-CHUN.REMANENCE-TEMPERATURE SPECTRUM AND COOLING MODEL[J].Chinese Journal of Geophysics,1988,31(3):315-328. |
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| Authors: | XU TONG-CHUN |
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| Institution: | 1. Institute of Geophysics, State Seismological Bureau, 100083 Beijing, China;
2. Department of Geological Sciences, Plymouth Polytechnic, Plymouth, Devon, PLA 8AA the U. K. |
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| Abstract: | The blocking process for TRM and VRM is explained in present study. Relatively low cooling-rate is associated witJi a relatively low blocking temperature. As far as a group of identical magnetic grains is concerned the laboratory unblocking temperature is not necessarily equal to the blocking temperature associated with the magnetisation. Different reset magnitudes appear in response to different cooling-rates. The dependence of reset magnitudes on the cooling-rate is related to the domain state. In certain circumstances the cooling-rate and cooling-model can be discussed in terms of the difference in reset magnitude as shown by the remanence-labo-ratory unblocking temperature spectra of country rocks collected at different distances from the baking source. The differences in reset magnitudes of some country rocks from Scotland are taken as examples for discussion. |
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| Keywords: | Reset magnitude Blocking temperature Laboratory unblocking temperature Overlapping spectra Equilibrium magnetisation |
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