济阳拗陷新生代构造演化及其动力学背景分析  

ANALYSIS OF CENOZOIC TECTONIC EVOLUTION AND ITS DYNAMIC BACKGROUND OF THE JIYANG DEPRESSION

作　　者：刘见宝[1] 袁遁甲 宋志敏[1,3] 李冰[1] 曲艳伟[1] 任建刚[1] 

机构地区：[1]河南工程学院,河南郑州451191 [2]许昌华杰公路勘察设计有限责任公司,河南许昌461000 [3]开封大学,河南开封475004

出　　处：《地质与资源》2017年第4期346-352,共7页Geology and Resources

基　　金：国家自然科学基金"琼东南盆地新生代构造东西分异的动力学机制研究"(41206037);河南工程学院博士基金项目"济阳拗陷新生代构造与油气成藏"(D2015010)

摘　　要：应用平衡剖面法计算了济阳拗陷新生代不同时期的第一主张应力方向:Ek—Es_4时期,盆地主应力方向为NNE向;Es_(3+2)时期为NNW向;Es_1—Ed时期为NWW向;新近纪和第四纪为近N-S向.区域第一主应力方向与盆地断裂活动性、构造变革面、盆地沉降史均具有较好的吻合性.济阳拗陷是以断陷为主,叠加走滑的复合型盆地,经历了裂陷+走滑—走滑—裂陷—拗陷4个阶段.The balanced section method is adopted to calculate the directions of the first principal tensile stress during Cenozoic period in Jiyang depression. The result shows that the principal stress direction is NNE during Ek-Es4, NNW during Es3＋2, NWW during Esl-Ed, and N-S in Neogene and Quaternary. The first principal stress directions are closely correlated with the fault activity, tectonic interface changing and subsidence history of the basin. The Jiyang depression is a composite basin which is dominated by rift and superimposed with strike slip. The basin has experienced four stages, namely, rift plus strike slip, strike slip, rift, and depression.

关 键 词：济阳拗陷 新生代 主应力 动力学 构造演化 

分 类 号：P542[天文地球—构造地质学] P546[天文地球—地质学]