【摘要】 本文将晚白垩世王氏组的沉积相划分为五类:湖盆陡岸浊积扇相、洪积扇沉积相、滨—浅湖前缘斜坡相、次深湖相、湖湾相。并对其微相特征进行了详细研究。王氏组沉积特征所反映的沂沭断裂带之活动特点是:先为徐缓的脉动,而后是陡然激烈的断陷,故造成了补偿性沉积与超补偿性沉积的叠置。王氏组砂岩平均化学成分表明:马站盆地具弧后盆地性质。更多还原

【Abstract】 The sedimentary facies of the Cretaceous Wangshi Formation falls into five types of: lake basin--steep shore turbidite fan, sedimentation of pluvial fan, lake shore--shallow lake front edge slope, sub--deep lake and lake-bay. A detailed study is conducted of their microfacies characteristics. The activity of the Yishu fault zone reflected by the sedimentation characteristics of the Wangshi Formation initiates with a slow pulsation followed by a sudden and violent rift faulting, thus causing the superimposed compensatory and supercompensatory sedimentation. The average chemical composition of the Wangshi Formation sandstones indicates that the Mazhan basin is of an arch-rear nature.更多还原