【摘要】 济阳坳陷东北部中、新生界可划分为上、中、下三个构造层，下、中侏罗统坊子组属下构造层；上侏罗系至白垩系为中构造层，又可细分为三卜构造亚层；新生界下第三系为上构造层．中生代的盆地演化划分为早、中侏罗世大型坳陷和褶陷成盆期和晚侏罗世至白垩纪断陷成盆期两个阶段，晚侏罗世晚期至早白垩世为强烈断陷期．中生代的构造样式以宽缓的褶曲和张性正断层为主，其中下构造层以北东向大型褶曲和北西向较平直的正断层为主；中构造层以宽缓的北西向褶曲和北东向铲形正断层为主，燕山Ⅱ幕、Ⅳ幕和Ⅴ幕在本区有重要影响．中生代的火山活动始于晚侏罗世，于早白垩世晚期停止活动，喷发物呈钙碱性，有两个喷发旋回，每一旋回由爆发开始，喷溢结末，早期偏中性，晚期偏基性，中生代盆地与构造的形成主要受郯庐断裂带活动方式控制．更多还原

【Abstract】 The Mesozoic and Cenozoic erathem in the northeast of Jiyang depression canbe divided into three tectono-stratigraphic sequences,i.e,lower,middle and uppersequences. The Fangzi formation of lower and middle Jurassic series belongs to the lowersequence and consists mainly of coal-bearing terrigenous elastics assemblage deposited in majordepressions and downwarped basins. The middle sequence deposited in faulted depressionincludes three structural sub-area. The structural type of Mesozoic erathem were chieflymarked by wide and gentle folds and extensional faults. The major floods trending NE andplaner normal faults trending NW occured in lower sequence. The wide and gentle foldstrending NW and Listric normal faults trending NE were in middle sequence. The EpisodeⅡand Ⅳ of Yanshanian movement has an important influence to the studied area. The vigorousvolcanism associated with intensive faulted depression occured during the Mengyin andQingshan Periods,and the latter is the most important. In the Mesozoic era, the structures andsedimentations were largely controlled by Tan-Lu fault.更多还原