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Discussion on Genesis and Age of Qingshan Fm in Wuhan
Author(s): 
Pages: 177-181
Year: Issue:  3
Journal: Resources Environment & Engineering

Abstract: 以青山剖面研究资料为基础,探讨“青山层”的成因与时代。结果表明,“青山层”中砂土层粒度组成与青山组中砂土层相同,粘土层粒度特征与现代长江边滩粘土层基本相同,青山组中粉砂土粒度特征与现代长江边滩粉砂土基本相同;粒度频率分布曲线呈多峰形态,累积曲线呈三段式,应是不同水动力环境下的河流边滩沉积。砂粒电镜扫描显示“青山层”与青山组砂粒表面均以水成的微观特征为主;光释光测年表明“青山层”形成于111.9 k...
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