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滚动背斜(Rollover anticline)亦称逆牵引构造(Reverse drag structure),是与张性正断层有关的一种褶皱。“滚动”指地层向断层面的反倾回转。“逆牵引”是从“正牵引”引伸出来的名词。正牵引是断层附近发生的地层拖拉现象,逆牵引在断层附近地层的弯曲方向与正牵引相反,出现在同生断层的下降盘。这是中、新生界断陷盆地内普遍发育的一种构造型式。 区域性的同生断层是产生滚动背斜或逆牵引构造的必要条件。这种断层都是在沉积过程中发育的边沉积、边断裂.向海湾或深凹陷的方向下掉。同一地层单元,下降盘的厚度2一10
The Rollover anticline, also known as the Reverse drag structure, is a fold associated with the zonal normal fault. “Rolling” refers to the anti-dumping of the formation to the fault plane. “Reverse traction” is derived from “positive traction” noun. Positive traction is the strata pull-off phenomenon occurred near the fault. The reverse traction leads to the opposite direction of positive traction in the strata near the fault, and appears on the descending disk of the Tongsheng fault. This is a structural pattern commonly developed in the Meso-Cenozoic faulted basin. Regional symbiotic faults are necessary conditions for rolling anticlines or reverse traction structures. Such faults are all deposited during the depositional process, and are fractured and dropped toward the gulf or deep depression. The same strata unit, down the thickness of the plate 2 to 10