| 碎屑沉积物中石英低温Al心的ESR测年初探 |
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| 引用本文：林敏,尹功明,丁艳秋,崔莹,陈克胜.2005.碎屑沉积物中石英低温Al心的ESR测年初探[J].地球学报,26(z1):255-257. |
| DOI：10.3975/cagsb.2005.s1.84 |
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| 中文摘要:老于20万年的碎屑沉积物的绝对测年方法急待建立。本文利用我国典型的碎屑沉积物——洛川黄土石英中的Al心，在115K温度下进行ESR测年研究，初步给出了4层黄土剖面的古剂量值。结果表明，古剂量值随地层深度的增加而呈增长趋势，说明利用ESR方法测定低温Al心可获得老于20万年的碎屑沉积物的地质年龄。 |
| 中文关键词:黄土 Al心 ESR 年代测定 |
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| A Preliminary Study of ESR Dating for Aluminum Center in Quartz from Sediments |
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| Abstract:It is urgent to study and establish a method for evaluating the ages of sediments older than 200 000 years. ESR dating has great potential in this field. This paper gives the paleo-doses for the four layers of loess in Luochuan, Shaanxi Province. The preli-minary results were obtained by measuring Al centers in quartz under 115 K with the ESR method. The paleo-dose increases with the depth of loess without saturation , and this indicates that ESR dating with Al centers might be used to evaluate the ages of sediments older than 200 000 years. |
| keywords:loess Al center ESR dating |
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