非同沉积断裂活动对邻断裂岩层厚度变化的控制作用  

CONTROLS OF NON-SYNDEPOSITIONAL FAULTS ON THE CHANGE IN THICKNESS OF STRATA ADJACENT TO FAULTS

作　　者：易顺华[1] 朱章显[1] 金军[1] 但卫[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《地质力学学报》2006年第4期441-444,440,共5页Journal of Geomechanics

基　　金：<宝鸡市重大灾害机理及风险评估研究>项目(项目编号:2006BAC04B05)资助

摘　　要：以露头尺度构造现象、物探成果图件、模型模拟实验及国内外有关文献资料为依据,探讨了由非同沉积断裂活动导致的、发生在邻断裂场所的岩层厚度变化的现象及规律。其表现特征为:在正断层作用下,上盘岩层发生增厚,下盘岩层出现减薄;在逆断层作用下,出现的情况正好相反;平移或走滑断层则在“滑向端”和“滑离端”分别出现增厚及减薄现象。该认识对石油、工程和找矿部门具有实际指导作用,对构造地质学的理论研究具有深化认识的意义。This paper discusses the changes in thickness of strata adjacent to faults induced by non- syndepositional faulting according to outcrop-scale structural phenomena, geophysical maps, model experiments and domestic and foreign data. These changes are manifested by the following features： under the action of normal faulting the hanging wall thickens while the footwall thins, but under the action of reverse faulting the reverse is the case; in the case of a strike-slip fault, the thickening and thinning phenomena appear at the ＂slip-forward end＂ and ＂slip-apart end＂ respectively. This view has practical guidance significance for the petroleum, engineering and mineral prospecting sectors and also deepens the understanding in the theoretical study of structural geology.

关 键 词：非同沉积断裂 邻断裂场所 岩层厚度变化 断层性质 

分 类 号：P54[天文地球—构造地质学]