摘要
Ｆｉｓｃｈｅｒ图解（又称为容纳空间图解）为人们研究沉积旋回在空间上的叠置规律、相对海平面变化、层序级次的划分以及地层层序对比等提供了一种客观实用的方法。本文较详细地讨论了该图解的绘制方法及应注意的问题。运用该图解，将北京西山下苇甸剖面张夏组划分为１个大的三级旋回层序和４个四级旋回层序，根据图解反映的相对海平面变化讨论了旋回层序与构造运动间的关系，提出华北板块晚寒武世之前的＂翘翘板运动＂应始于中寒武世张夏期之早期到中期。
ischer plot is very useful in studying the stacking patterns of cyclic sequences,the oscillations of relative sea-level changes and their orders. Details for drawing Fischer plot are discussed in this paper. The Fischer plots of the Middle Cambrian formation suggest that the Zhangxia Formation is a long-term third-order cyclic sequence(6～8 Ma) and can be further divided into four forth-order cyclic sequences.The movement (event) which caused the lifting of the north part of North China Platform can be tracted into the early stage of the Middle Cambrian Zhangxia Period.
出处
《现代地质》
CAS
CSCD
1995年第3期279-283,共5页
Geoscience
关键词
旋回层序
张夏组
容纳空间图解
地层
寒武纪
Fischer plot
cyclic sequence
the Zhangxia Formation
relative sea-level change
