| 基于测年法的永安石林形成年代及发育演化过程研究 |
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| 引用本文： | 池永翔,李润,陈植华. 基于测年法的永安石林形成年代及发育演化过程研究[J]. 福州大学学报(自然科学版), 2011, 39(1): 152-156 |
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| 作者姓名： | 池永翔 李润 陈植华 |
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| 作者单位： | 中国地质大学环境学院;福建省地质调查研究院;福州大学环境与资源学院; |
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| 基金项目： | 中国石林地质地貌对比研究资助项目 |
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| 摘 要： | 以永安石林地区地质、水文地质资料为背景,利用不平衡铀系法,对区内不同高程的钙华沉积物岩样进行年龄测定,确定了永安石林形成年代为中更新世以来,距今约50万年.结合区域地质构造历史及沙溪河谷地貌发育演化过程,认为:永安石林的形成始于早更新世;主要是因地壳间歇性抬升运动且大湖盆地开始处于剥蚀环境,石炭二叠纪碳酸盐岩的上覆岩层逐渐被风化剥蚀后形成.
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| 关 键 词： | 永安石林 测年 形成年代 发育演化过程 |
On the formation age and developing process of Yong'an stone forest |
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| CHI Yong-xiang,LI Run,CHEN Zhi-hua. On the formation age and developing process of Yong'an stone forest[J]. Journal of Fuzhou University(Natural Science Edition), 2011, 39(1): 152-156 |
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| Authors: | CHI Yong-xiang LI Run CHEN Zhi-hua |
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| Affiliation: | CHI Yong-xiang1,2,LI Run3,CHEN Zhi-hua1(1.School of Environmental Studies,China University of Geosciences,Wuhan,Hubei 430074,China,2.Fujian Geological Survey Institute,Fuzhou,Fujian 350001,3.College of Environment and Resources,Fuzhou University,Fujian 350108,China) |
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| Abstract: | Under the background of geological and hydrogeological data in Yong'an stone forest,Uranium-series disequilibrium method is introduced in this paper to mensurate the age for calc-sinter rock samples at different heights,so the formation age of Yong'an stone forest is confirmed,that is,about 500 thousand years since Medio-Pleistocene.Combined with history of regional geological structure and evolvement process of Shaxi valley form,this paper concludes,Yong'an stone forest is formed during Early Pleistocene,i... |
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| Keywords: | Yong'an stone forest dating formation age evolvement process |
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