The magnetic fabric characteristics and environment signification of modern fluvial deposit in the Middle Reaches of Yangtze River
In order to establish magnetic fabric identification on different sedimentary environment in the middle reaches of Yangtze River,we studied the magnetic fabric parameter character of modem rivers deposits of the different water level and sedimentary environment.The result reveals that,① In the straight river course,the statistical average value of magnetic fabric parameter κ,P,F,Fs,T and E are larger than those in winding river course.However,the value of q and L are less than those in Winding river.② The direction of declination of long axis of anisotropy magnitude ellipse in straight river course is very clear.And it has a good consistency with the direction of flow.However,the direction of declination of long axis of anisotropy magnitude ellipse in winding river course is scattered.③ From high-flood land,low-flood land to sand-bar in the center of river,the statistic average value P,F,T,FS,E of magnetic fabric parameters of deposit change from small to large slowly.But q and L have the trend from large to small.The study result is significant for the study of evolution,vicissitudes and identification of ancient river sources.
Middle Reaches of Yangtze River fluvial deposit magnetic fabric character
Yufen Zhang Changan Li
Institute of Geophysics and Geomatic,China University of Geosciences,Wuhan 430074,China Faculty of Earth Science,China University of Geosciences,Wuhan 430074,China
国际会议
The 3rd International Conference on Environmental and Engineering Geophysics(第三届环境与工程地球物理国际会议)
武汉
英文
460-463
2008-06-15（万方平台首次上网日期，不代表论文的发表时间）