山东省胶莱盆地东北部下白垩统莱阳组震积岩特征及地质意义*
周勇1, 纪友亮1, 万璐2, 潘春孚1

Characteristics and geologic significance of seismitesin the Lower Cretaceous Laiyang Formation in northeastern Jiaolai Basin in Shandong Province
Zhou Yong1, Ji Youliang1, Wan Lu2, Pan Chunfu1
胶莱盆地东北部下白垩统莱阳组中的串珠状构造和微褶皱层理构造(A—串珠状构造,侧向挤压使沉积层变厚,拉伸使层变薄,沿岩层走向厚度不一,其形状与香肠构造相似,莱参1井,井深179.24 m;B—现象同A,莱参1井,井深72.83 m;C—串珠状构造,被撕断后常呈小型透镜体沿层内分布,姜浅4井,井深786.36 m;D—微褶皱层理,褶曲大小为10 cm,褶曲层厚度约为10 cm,形态不规则、不协调,定向性差,褶曲纹层上下围岩地层未变形,莱孔1井,井深141.1 m;E—微褶皱层理,现象同D,规模较小,微褶皱层上为液化砂岩脉和火焰状构造,莱孔2井,井深151.65 m;岩心直径为10 cm)