【作者】 商玉强； 张宝政； 文琼英；

【Author】 Shang Yuqiang (IGMR,Nanjing) Zhang Baozheng Wen Qiongying (Changchun College of Geology)

【机构】 南京地矿所； 长春地质学院；

【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.并详细研究了微相特征.王氏组沉积特征所反映的沂沭断裂带的活动特点是: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 strata of Wangshi formation mainly appear in the faulted-basins controlled by Yi-Su fault zone,such as Anqui-Juxian basin,Machan basin,Suzhen basin etc.,in which the sedimentary features of Wangshi formation and environment arc broadly similar.The types of sedimentary rocks with original features arc as follows:turbidite,pluvial conglomerate, olistolite,deep-water dark mud-shale,shallow-water sandstone—gravel sandstone-sand mudstone.Sequentially,sedimentary facies of Wangshi formation can be divided into five types:nearshore turbidity fan facies on the steep shore,pluvial fan facies, front slope facies on the shore-shallow water,deeper lacustrine facies and lacustrine-bay facies.更多还原