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山东省灵山岛下白垩统青山群火山地震软沉积物变形构造特征及成因机制*
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周瑶琪1,2, 周腾飞1,2, 张振凯1,2, 梁钊1,2, 梁文栋3, 王安东4, 于姗姗5 |
Characteristics and formation mechanism of soft-sediment deformation structures related to volcanic earthquakes of the Lower Cretaceous Qingshan Group in Lingshan Island, Shandong Province
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Zhou Yaoqi 1,2, Zhou Tengfei 1,2, Zhang Zhenkai 1,2, Liang Zhao 1,2, Liang Wendong 3, Wang Andong 4, Yu Shanshan 5
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山东省灵山岛洋礁洞剖面下白垩统青山群球—枕构造野外照片 a—大型扁平球—枕构造,下伏细沙层发生液化,由于重力失衡,向上底辟(较弱),上覆粗沙层向下坠入,未完全脱离母层;b—粗砂质“梭型”球—枕构造,上覆粗沙层坠入下伏细沙层中,已完全脱离母沙层;c,d—小型球—枕构造,上覆粗砂“坠入”下伏细沙中,c中沙球已完全脱离母沙层,d中呈现半脱离状态 |
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