| 地面测年技术——宇生同位素测年 |
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| 引用本文： | 王建,徐孝彬.地面测年技术——宇生同位素测年[J].地球科学进展,2000,15(2):237-240. |
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| 作者姓名： | 王建 徐孝彬 |
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| 作者单位： | 1. 南京师范大学地理科学学院,江苏,南京,210097
2. 江苏教育学院地理系,江苏,南京,210013 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，KZ951-A1-204， |
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| 摘 要： | 宇生同位素测年法是一种用于地面测年的技术,它能够测出103～106a之间的地貌面的裸露年代。常用的宇生同位素有3He、10Be、21Ne、26A1、36Cl。地面宇生同位素的浓度与时间和地面侵蚀速率之间存在着函数关系。该测年法在地貌学年代测量中具有很大的潜力。
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| 关 键 词： | 宇生同位素测年法 地面出露年代 地面测年 |
| 收稿时间： | 1999-06-08 |
| 修稿时间： | 1999-08-16 |
TECHNIQUE FOR SURFACE DATING-COSMOGENIC ISOTOPES DATING |
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| WANG Jian,XU Xiaobin.TECHNIQUE FOR SURFACE DATING-COSMOGENIC ISOTOPES DATING[J].Advance in Earth Sciences,2000,15(2):237-240. |
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| Authors: | WANG Jian XU Xiaobin |
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| Institution: | 1.College of Geographical Sciences,Nanjing Normal University,Nanjing210097,China；2Department of Geography,Jiangsu Education College,Nanjing210013,China |
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| Abstract: | Cosmogenic isotopes dating is a new technique.It can measure the surface exposure age of geomorphic surface in the age range of 10 3 to 10 6years.Possible candiates of isotopes used for dating include 3He, 10 Be, 21 Ne, 26 Al, 36 Cl.Cosmogenic isotope concentration in the surface rock is a function of age and erosion rate.This technique has great potential in Geo surface dating.It can be used to date the glaciation events,volcanic activities,faulting rates,flooding and mud flow events and geomorphological process etc.In a word,in situ cosmogenic isotope and cosmogenic dating technique is applicable to date the rock surface that is impossible to be dated by the traditional technique.With the development and the wider application of this technique,geomorphology would be push forward faster. |
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| Keywords: | Cosmogenic isotopes dating Exposure age Surface dating |
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