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济阳拗陷坨147井沙三段岩心的颗粒流沉积中,存在一系列特殊的同沉积期变形构造,包括:颗粒流向下侵蚀,并沿纹层面挤入到下伏油页岩层中,形成伸长状的小砂体;砂楔上部的泥页岩薄层在后续流体的冲刷下向后翻卷变形;翻卷片被撕裂、断开混入到颗粒流中,并被流体拖曳变形;变形体被继续拖曳形成脉状分叉的拖曳痕。上述几种现象可以构成一个连续的变化序列,与油页岩的薄互层和颗粒流的流体是形成上述连续变形构造的重要条件。对这种现象的研究,有助于进一步了解重力流的冲刷、沉积过程。
There are a series of special sedimentary facies metamorphic structures in the particle flow deposition of the core member of the third member of Shahejie 147 in Jiyang depression. These include the erosion of grain flow and the extrusion into the underlying oil shale along the laminar plane to form Elongate small sand body; shale upper shale thin layer in the follow-up fluid scouring back roll deformation; roll film is torn, broken into the particle flow, and the fluid drag deformation; deformed body was Continue dragging to form a vein-branching tow mark. These phenomena can constitute a continuous sequence of changes, and oil shale thin interbed and particle flow of fluid is to form the continuous deformation of the important conditions. The research on this phenomenon helps to further understand the erosion and sedimentation process of gravity flow.