【摘要】 皖南地区太平复式向斜形成于印支期,文章通过野外调查和构造解析可知该向斜构造主要是两期构造叠加的产物,即早期褶皱(F1)形成于加里东期,其构造样式主要为区域性开阔宽缓褶皱,规模巨大,为复式褶皱,其构造线呈北东东或近东西向延伸;晚期褶皱(F2)形成于印支期,其样式为线形紧闭-中常褶皱,规模较小,呈平行排列的简单褶皱,其轴迹呈北东或北北东向。两期构造斜跨叠加,使早期褶皱轴迹向北东偏转。深入研究区内构造特征及其演化规律,对区域构造属性的厘定具有重要意义。更多还原

【Abstract】 Taiping compound syncline in southern Anhui formed in the Indosinian period.The results of the field investigation and structural analysis show that the syncline is mainly composed of folds of two-stage structure superposition.The early tectonic formation was formed in the Caledonian period(F1).The scale is enormous.Its structural style is mainly represented by the regional open and wide fold.The structural combination is characterized by compound fold.The structure line direction is NEE to nearly EW.The late fold was formed in the Indosinian period(F2).Its structural style is represented by closed-normal linear fold.The folds are parallel arranged in NE or NNE.The size is relatively small.Two stages of construction obliquely superimposed,defecting the early fold axis from EW to NE.The study of its structural characteristics and evolution law is of great significance to the determination of regional tectonic attributes.更多还原