| 宇宙成因核素埋藏年龄测定及其在地球科学中的应用 |
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| 引用本文： | 袁兆德,陈杰,张会平.宇宙成因核素埋藏年龄测定及其在地球科学中的应用[J].地震地质,2011,33(2):480-489. |
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| 作者姓名： | 袁兆德 陈杰 张会平 |
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| 作者单位： | 中国地震局地质研究所地震动力学国家重点实验室; |
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| 基金项目： | 地震动力学国家重点实验室自主研究课题(LED2010A04); 国家自然科学基金(40672109); 科技部国际科技合作计划项目(2008DFA20860)共同资助 |
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| 摘 要： | 原地生成宇宙成因核素埋藏测年方法,在晚新生代沉积物尤其是陆相碎屑沉积物测年上具有广泛的应用前景.在同一岩石或矿物中的宇宙成因核素对,例如26Al和10Be在地表的生成速率比值是固定的,不受纬度和海拔的影响,但是这一核素对分别具有不同的半衰期.在地表经历了暴露的沉积物被埋藏后,该比值会随着时间而降低,因此具有不同的半衰期...
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| 关 键 词： | 宇宙成因核素 埋藏年龄测定 晚新生代 沉积物 |
| 收稿时间： | 2011-03-05 |
| 修稿时间： | 2011-04-23 |
TERRESTRIAL IN SITU COSMOGENIC NUCLIDES BURIAL DATING AND ITS APPLICATION IN GEOSCIENCES |
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| YUAN Zhao-de,CHEN Jie,ZHANG Hui-ping.TERRESTRIAL IN SITU COSMOGENIC NUCLIDES BURIAL DATING AND ITS APPLICATION IN GEOSCIENCES[J].Seismology and Geology,2011,33(2):480-489. |
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| Authors: | YUAN Zhao-de CHEN Jie ZHANG Hui-ping |
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| Affiliation: | YUAN Zhao-de CHEN Jie ZHANG Hui-ping(State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China) |
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| Abstract: | Terrestrial in situ cosmogenic nuclides burial dating has a promising application in dating of late Cenozoic detrital sediments,for example,cave sediments,fluvial sediments and moraine.This method relies on a pair of cosmic-ray-produced nuclides that are produced in the same rock ormineral target at a fixed ratio,but have different half-lives.For example,26Al and 10Be are produced in quartz at 26Al:10Be=6.75:1.The ratio is not affected by latitude and altitude.After sediments are buried,the ratio would beco... |
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| Keywords: | Terrestrial in situ cosmogenic nuclides burial dating late Cenozoic cave river downcutting paleoanthropology |
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