摘要
在１９８８年—１９９３年期间，对河北歧口及上海南汇海岸带泥质潮坪现行滩面和浦西曹杨新村近代亚潮坪沉积剖面进行了沉积动力环境与沉积磁组构特征测量分析。现行开敞海岸同物源潮坪沉积磁组构参量量值特征显示出：其Ｋ值高潮滩为高值，低潮滩次之，中潮滩为低值。亚近代开敞海岸泥质潮坪沉积剖面磁组构测量结果：Ｋ值是区分潮坪沉积动力活动带的高分辨率标志；Ｐ、Ｌ、Ｆ、ｑ是分析潮坪沉积结构的高分辨率标志；ｑ是分析潮坪沉积微结构的高分辨率标志，也是分析潮坪暴风浪沉积事件记录的高分辨率标志；Ｋ、Ｐ、Ｌ、Ｆ。
The measurements and analyses of sedimentary dynamics and magnetic fabrics were done for modern tidal mud flat sediments at the coast of Qikou in Hebei Province and Nanhui in Shanghai and also for subrecent tidal flat Sedimentary Profile at Caoyangxincun in Shanghai during 1988 to 1993.Value characteristics of magnetic fabric parameters of different modern coastal tidal flat sediments with the same sources show:high tidal flat has high K value,mesotidal flat has low K value and low tidal flat has middle K value.The measurement results of magnetic fabric of the tidal mud flat sedimentary profile in subrecent open coast show that K is the high resolution parameter to differentiate dynamic zones of tidal flat deposition,P,L,F,and q are those to analyze tidal flat sedimentary textures,and q is that to study tidal flat sedimentary microstructures and tidal flat storm events,and assemblage of K,P,L,F and q can be used to distinguish,with high resolution,low tidal flat sedimentary facies and sublittoral zone sedimentary facies.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1997年第1期13-16,共4页
Marine Geology & Quaternary Geology
基金
国家自然科学基金
关键词
沉积
湖泊
泥质潮坪
磁组构特征
高分辨率
homologous tidal flat deposition magnetic fabric parameter high resolution
