【摘要】 发育在海拉尔盆地乌尔逊凹陷东部斜坡上南屯组地层中的下切谷,是在区域水进背景下形成,谷内进积、反韵律的充填特点,与经典的同类地质现象迥然不同,同时在区域上也无法简单地用“顺源堆积”来解释,为此在充分分析了它的地震资料和沉积特征基础上,从凹陷的构造演化角度出发,提出了一个翘倾构造成因模式,进一步强调了构造作用在断陷盆地层序的形成中所占据的重要地位。更多还原

【Abstract】 The incise valley developed in Nantun formation of east-ern slope of Wuerxun depression is obviously different from the classical one because it formed in regional trend of water plane ris-ing and filled with reverse rhythmicity. It cann’ t be interpreted by sedimentary in the source direction too. The paper suggests a see-saw structure modei to explain forming and filling of incise valley.更多还原