| 含盐前陆充填变形前缘盐上层构造样式 |
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| 关键词:evaporite foreland leading edge of deformation structural style |
| 基金项目:国家自然科学基金项目(编号:40172076)，国家重点基础研究发展规划项目(编号:G19990433) |
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| Structural Styles in the Deformation Leading Edge of Evaporite-bearing Foreland Basin Fill |
| Structural styles and their relationships in thedeformation leadingedge of the evaporite-bearing foreland basin fill are discussed based on the thickness of the evaporite layer and its overburden. The basic structural styles of the overburden, i.e., fold or fault, are determined by the relative thicknessbetween the overburden and the evaporite layer. Where the area in core of a detachment fold is smaller than or equal to the area of evaporite available to supply core of the fold, an anticline will form. Where the area in core of a detachment fold is larger than the area of the evaporite available to supply core of thefold, faults will form. As for the la-ter, the structural styles are controlledby the intersection position of two back thrust faults. Where two back thrust faults intersect within or under the evaporite layer, a pop-up will form. Where two back thrust faults intersect within the overburden, a pop-up will form abovethe intersection and a triangle with partial overburden sequence will form underthe intersection. Where two back thrust faults intersect above the overburden, atriangle zone with a complete overburden sequence will form. The position of the intersection is determined by the thickness of the overburden. |
| CHEN Shu-ping,TANG Cheng-jie,JIA Cheng-zao.2004.Structural Styles in the Deformation Leading Edge of Evaporite-bearing Foreland Basin Fill[J].Acta Geoscientica Sinica,25(5):561-564. |
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