陕西五曲湾滑坡发育特征和~(14)C测龄

英文篇名：Development Characteristics and ~(14)C Dating of a Landslide in Wuquwan in Shaanxi Province
中文刊名：灾害学
英文刊名：Journal of Catastrophology
作者：杨丽娟 ; 李华亮 ; 易顺华
英文作者：Yang Lijuan ; Li Hualiang and Yi Shunhua ( College of Earth Sciences ; China University of Geosciences ; Wuhan ; 430074 ; China)
中文关键词：陕西省凤翔县五曲湾 ; 滑坡年龄 ; 14C测龄 ; 炭化树根 ; 1556年华县大地震
英文关键词：Wuquwan of Fengxiang County ; Shaanxi Province ; landslide age ; 14C dating ; carbonized tree root ; Huaxian earthquake in 1556
出版日期：2010-09-20
机构：中国地质大学地球科学学院;
年：2010
期：03
出版单位：灾害学

摘要

在陕西省凤翔县五曲湾滑坡的滑带土中发现一段树根,表面被炭化,并且发生了强烈的剪切变形,分析认为此乃滑坡滑动所致。经过14C测龄,年龄为462±45年B.P,这一年龄与地质分析获取的认识基本吻合,与1556年"华县大地震"发生的年份非常接近,从而为研究五曲湾滑坡的触发机制提供了重要依据。最后提出,如果在滑带土中发现可用于定年的样品,采用14C法测定滑坡年龄,是对滑坡进行定年的有效途径。
A piece of tree root was found in the slip soil of a landslide in Wuquwan,Fengxiang County, Shaanxi Province. Surface of the root was carbonized and intensely sheared,which was analyzed to be resulted from a landslide sliding. 14C dating suggests that the landslide age is 462 ± 45 years. This datum accords with the geology analysis result and is close to the year of 1556 when the Huaxian earthquake took place. This information contributes to the study on triggering mechanism of the Wuquwan landslide. Consequently,if we can find a sample from the sliding soil that can be used for dating,the method of 14C dating should be an effective approach for dating the age of a landslide.

引文

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