开合构造与沉积层序结构样式

Opening-closing tectonics and its relation with sequence stratigraphic architecture styles

开合运动是地球运动的基本形式,开合构造是地质演化的基本构造。其存在具普遍性,时间上具旋回性,平面上具互补性,垂向上具层次性,规模上具级别性,演化上具不均一性。开合构造与沉积层序结构关系密切。在开裂作用阶段,海侵体系域优势明显,层序结构样式以T型为主;在开裂高峰期或开裂向闭合转换期,海侵体系域与高位体系域优势均不明显,层序结构样式以TH型较多;在闭合阶段,高位体系域优势明显。

Opening-closing is a basic form of the Earth's movement and opening-closing tectonics is a basic tectonics in geological evolution.It shows universality in distribution,cyclicity in time,complementariness in plan,vertical layering,hierarchy in rank and inhomogeneity in evolution.The relationship between opening-closing tectonics and sequence architecture is close.During the opening stage,the transgression systems tract was obviously dominant and the sequence architecture was mainly of T style;during the stage of opening peak or transition from opening to closing,the dominance of the transgression systems tract and highstand systems tract were not obvious and the sequence stratigraphic architecture styles were dominated by the TH style;during the stage of closing,the dominance of the highstand systems tract was obvious and the sequence stratigraphic architecture styles were dominated by the H style.