凹陷的
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Taking the plate tectonics as leading theories, combining outcrop, seismic techniques, drilling and logging datum, inter-verifing manifold researching methods, The paper has amply researched the region. discussed the coupling relation of basin-mountain and the geodynamics system; analyzed geologic tectonic characteristics of the basin; confirmed superposed alteration in Mesozoic of the basin; recompartmentalized tectonic units of the researching region and the basin; studied the tectonic evolution of the basin since Mesozoic; ascertained four large tectonic layers and five tectonic evolution process stages in different ways of formation and tectonic alteration; established different tectonic stages、compages、models and sedimentary filled processes, based on the organic geochemistry and oil-gas geologic characteristics in middle Cenozoic of the basin, the conclusions have been summarized in the paper, such as:The primary source rock in lower Permian and subordinate source rock in upper Triassic are developed in the region with better quality, and secondary hydrocarbon is possible; The bearing system which is comparted by three large tectonic layers and two unconformity surfaces formed in Palaeozoic、upper Palaeozoic to Triassic and Cenozoic developing in the region, compounded with reservoirs of different lithology is developed in the region, while the property of tectonic fracture reservoir is better; Based on the analyzing petroleum accumulation elements and preserving conditions, the deep depressing belt in the north of Luoyang depression、Shiling-Yiyang folded fault belt in Yiyang depression and wide anticline belt in Yichuan depression are advantageous petroliferous region, Zhaizhen anticline in Luoyang depression and Shimen wide anticline on footwall of overthrust in Yichuan depression are optimum tectonic traps.
本文以板块构造理论为指导思想,采用露头区野外地质与盆地地震、钻井、测井资料密切结合,多种测试方法互检的研究方法,探讨了盆山耦合关系及其所控制的地球动力学系统;分析了研究区域和盆地地质结构构造特征,确定了中生代盆地的叠合改造性质,并重新划分区域构造单元和盆地构造单元,深入研究了洛阳—伊川盆地自中生代以来的构造演化;确定了成盆作用和构造改造作用的四大构造层和五期不同方式、方向的构造演化过程;建立了不同构造阶段的构造组合和样式及与构造相关的沉积充填过程;在此基础上通过多种有机地球化学指标,研究盆地中新生代油气地质特征,认为本区发育下二叠统区域主力烃源岩、上三叠统区域非主力烃源岩,两套烃源岩质量均较好,并具备二次生烃条件;认为本区发育古生界、上古生界—三叠系和新生界三大构造层、两个不整合界面分隔、不同岩性储集层叠置组合和构造裂隙型储集层的复式储集体系,其中构造裂隙型储集层储集性能较好;依据油气成藏条件和保存条件分析,认为洛阳凹陷北部深凹带、宜阳凹陷内石陵—宜阳褶断带以及伊川凹陷伊川宽阔背斜带为较有利含油气区,有利的构造圈闭是洛阳凹陷翟镇背斜和伊川凹陷的石门逆冲断层下盘的宽缓背斜
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Banqiao rupture structural belt is located on the eastside of Banqiao sag, which is controlled by Banqiao and Dazhangtuo faults.
板桥断裂构造带位于板桥凹陷的东侧,受板桥凹陷和大张坨断层控制。
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Tectonic subsidence play dominant role in their geometric shapes, basin fillings, sequence evolution and sediment distribution in the Wushi Sag. Outline of the sequences are in shape of box-wedge or sheet-wedge and boundaries of sequences are varied from bilateral fault to monoclinal fault overlap, so that the sequences show distinct semigrabens which overlay in different ways. Seven sequences were formed in different stage of tectonic evolution. The sequence of SQ1 formed in initial rift stage and deposited alluvial sequence. Sequences SQ2-SQ4 developed in intense rift stage and sediment lacustrine sequence. Sequences SQ5-SQ7 formed in late period of rift before thermal subsidence and deposit mere and delta sediment. The place adjacent to the synsedimentary fault is the subsidence center and depocenter; meanwhile, controlling fracture migrates in horizontal made subsidence and sedimentary center of the sag changed.
构造沉降是控制层序几何形态,充填叠置方式、演化及沉积体系分布的最重要因素:凹陷由多个半地堑在不同层序发育时期以不同方式叠置联结而成;受断层控制,层序外部形态有箱状-楔形、楔形-席状披覆型,边界终止方式有双断终止型、单断终止超覆型;不同构造演化阶段层序内部充填的沉积体系各具特征,初始断陷阶段的SQ1沉积冲积层序,强烈断陷阶段的SQ2-SQ4充填湖相层序,晚期断陷阶段SQ5-SQ7内部充填浅湖和河流三角洲沉积;同沉积断层陡坡带沉降迅速、可容纳空间快速增长,是凹陷的沉积和沉降中心,断陷期主控断裂活动时间和空间的变化导致了凹陷沉积和沉降中心的迁移。
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Results Seven cases were basilar impression,nine cases were dearticulation of atlantoepistrophic articulation,and five caces were Chiari abnormity.In the X-ray pictures,it showed the abnormal form of the atlas and axis,it also showed the Chamberlain line, according to which we could diagnose the basilar impression.
结果 21例中,颅底凹陷为7例,寰枢椎脱位9例,Chiari畸形5例。X线平片主要表现为寰椎、枢椎形态构异常,并且能显示Chamberlain线,借此可作出颅底凹陷的诊断。
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Methods 21 cases suffer from sagging upper eyelid underwent this therapy,Autogenous fat grafts harvested from cheek fat pad or axilla or abdomen were transplant into septum orbitale for correction of sagging upper eyelid.
对21例上睑凹陷的患者应用自体脂肪移植充填于上睑眶隔内矫正上睑凹陷。
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The effect of the friction between rolls and ring can be ignored and the effect of the spread velocity of rolling on the deformation of ring is illustrated.
通过模拟分析比较,揭示出了环件轧制过程中的金属流动规律:轧制时,环件外侧的变形最大,厚向中心部位变形最小,内侧的变形程度介于中间;环件内外环面的压应力分布和变化规律:在垂直于环件轴线的对称面上,压应力分布近似对称状态,而且在对称面上的应力最大,往端面方向开始减小;指出了环件轧制中轧辊与环件摩擦对环件成形的影响:对于环件的宽展变形,摩擦的影响很小,可以忽略;分析了环件进给速度对环件成形的影响并阐述了环件厚向中心部位凹陷产生的原因,提出防止凹陷的措施:在轧制时,尽量使用快的进给速度有利于防止端面凹陷的产生;研究了导向辊位置对环件成形以及轧辊受力的影响:导向辊的位置对环件的宽展变形影响很小,但对轧辊的受力影响较大,当导向辊的中心位置位于毛坯初始中心位置之上时,驱动辊和芯辊的受力相对较小,这是导向辊导向时优先考虑的位置。
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Study suggests the strata of this block are of the following feature: various sequence interface types, first-class fault and tectonic movement control strata framework styles; formation and evolution of Maodun sub-high makes single-lined fault dustpan-type depression complicated to produce unsymmetrical grabens and igneous rock, which influences detrital rock infilling pattern in the depression.
研究认为,本区地层格架有以下特点:多种层序界面类型、地层格架的样式受凹陷内一级断层和构造运动的控制、毛敦次凸的形成及演化将单断箕状凹陷复杂化,形成不对称地堑、火成岩的发育影响了箕状凹陷的碎屑岩充填模式。
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The analysis indicates the following: the fault activity rate is the most representative parameter;the fault activities in the Huimin subbasin have the long-continued,differential and episodic characteristics;and the activities of faults of lower orde...
结果表明,凹陷内断裂活动具有长期性、差异性和幕式性的复杂特征,低级次断裂活动具有短期性和不确定性的特点。四级控凹断层分别对凹陷的形成和凹陷内局部构造起着不同的作用。
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Results of inversion show that pre-Tertiary deposition in Dongying depression is controlled with westnorth structures. Archaean group is the crystal basement of Dongying depression, which is a north steep and south gentle rift subsidence basin striking from eastnorth to near westeast, and the deepest position is up to 12000 m at the area of Xianhe and Xinzhen. The configuration of Ordovician of lower Palaeozoic system highly inherits that of Archaean group and both have a strong consistency. The configuration of Mesozoic inherits that of lower Palaeozoic system as a whole, but filling and local reconstruction are distinct, and the scope of Dongying depression has obviously decreased.
结果表明,东营凹陷前古近系沉积主要受北西向构造的控制,太古界构成东营凹陷的结晶基底,是一个北东转近东西向的北陡南缓的断陷,最深处位于现河、辛镇一带,可达12000 m;下古生界奥陶系构造具有很强的继承性,其构造格局与太古界有很强的一致性;中生界宏观上继承了下古生界的构造形态,但填平补齐和局部改造比较明显,凹陷范围明显缩小。
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Results Malang Sag has two important times uplifting and three times subsiding, while Tiaohu Sag has three times uplifting and four times subsiding.
结果 马朗凹陷主要经历了2个隆起期和3个沉降期,条湖凹陷为3个隆起期和4个沉降期;早、中二叠世两凹陷的沉降幅度很大,沉积速率最大可达133.46m/Ma;晚白垩世的隆起幅度最大,地层剥蚀厚度可达846m。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。