惠民凹陷中央隆起带古近系地震浊积岩特征研究
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摘要
通过大量岩心、薄片、粒度和成像测井资料分析,首次提出山东惠民凹陷中央隆起带沙三段上部浊积岩与典型的原地震积岩(包括震裂岩、震褶岩、自碎屑角砾岩等)紧密伴生,当属于地震成因浊积岩,地震浊积岩与原地震积岩之间被震积不整合面分割。地震浊积岩与非地震浊积岩具有类似的鲍玛序列,不同的是地震浊积岩鲍玛序列底部的含砾砂岩中颗粒具有碎裂结构。根据地震浊积岩所处位置,垂向上一般可组成完整的原地震积岩—“似海啸岩”—震浊积岩序列、原地震积岩—震浊积岩序列或者未震层—地震浊积岩序列。地震成因浊积岩的发现和研究,将为研究陆相湖盆地震事件沉积及正确判断济阳坳陷储集砂体的“多元”性提供地质理论依据。
Based on research work including core,thin section,grain size and image logging analysis,it is presented for the first time that the turbidites and typical seismites(shattered rocks,seismic corrugated rocks and autoclastic breccia) coexist in the upper third member of Shahejie Formation in central uplift belt,Huimin depression,therefore these turbidites belong to the turbidites of seismic origin,the seismoturbidite rocks and seismite are separated by seismic unconformity.Seismoturbidite rocks and non-seismoturbidite rocks have the similar Bouma sequences,and the difference is that cataclastic textures develop in the grains of gravelly sandstone in the bottom of seismoturbidite rocks's Bouma sequence.Vertically,the seismoturbidite rocks are usually above similar tsunamites or seismites.All of them compose an integrated sequence of seismite-similar tsunamite-seismoturbidite rock,a sequence of seismite-seismoturbidite rocks or a sequence of unshocked layer-seismoturbidite rock.The discovery and research of turbidite of seismic origin provide one of theoretical foundations for studying the event deposition of lacustrine basin and judging the 'polygenesis' of reservoir sandbody in Jiyang sub-basin.
引文
[1]梁定益,聂泽同,万晓樵,等.试论震积岩及震积不整合—以川西、滇西地区为例[J].现代地质,1991,5(2):138-147.
    [2]H.G.里丁.沉积环境和相[M].周明鉴等译.北京科学出版社,1985:472-478.
    [3]杜远生,韩欣.论震积作用和震积岩[J].地球科学进展,2000(4):389-394.
    [4]姜在兴,操应长.砂体层序地层及沉积学研究[M].北京:地质出版社,2000:144-148.
    [5]杨剑萍,陈发亮,姜在兴.陆相断陷湖盆层序地层模式及控制因素研究[J].煤田地质与勘探,2003,31(1):1-4.
    [6]郭力宇,干枝茂,张国伟,等.陕西洛南陶湾砾岩地震机理新认识[J].北京大学学报(自然科学版),2002,38(4):497-503.
    [7]孙晓猛,梁定益,聂泽同.大陆边缘震积岩序列—以金沙江中段震积岩为例[J].现代地质,1995,9(3):1-27.
    [8]梁定益,聂泽同,宋志敏.再论震积岩及震积不整合—以川西、滇西地区为例[J].地球科学,1994,19(6):845-850.

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