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Data obtained by thin-sections analysis, cathodoluminescence emission analysis and SEM/EDX show that carbonate cements seem to be the uppermost cements composed of ferroan sparry calcite and ankerite and are distributed mostly in the depth interval of 100 m below the unconformity, with their contents increasing with the depth.

通过薄片观察、阴极发光、扫描电镜/能谱分析,认为碳酸盐胶结物是研究区砂岩最主要的胶结物成分,其主要类型为方解石和铁白云石,垂向上含量随深度增加而增加,多集中分布在白垩系和侏罗系之间的不整合面之下约100 m的范围之内。

By the single zircon U Pb dating method, the quartz syenite porphyny yielded an age of concordance (1 731±29)Ma, and the aegirine augite syenite and syenogebbro are dated upper cocordi...

应用单锆石U Pb法测定年龄,石英正长斑岩谐和年龄为( 1731± 2 9)Ma ,霓辉正长岩、正长辉长岩上交点年龄分别为( 1644± 14)Ma、( 1750± 65)Ma.1650~ 170 0Ma是碱性岩浆活动热构造事件的标志,石英正长斑岩被中元古代晚期的高山河组不整合覆盖,故以 1650~ 170 0Ma作为熊耳群的上限。1650~ 170 0Ma热构造事件是华北地块重大地质事件,有可能是进一步划分中元古代重要的年龄界限。

Sequence stratigraphic frameworks and the overlap unconformable traps in deep formations of Shengping area, northern part of Songliao basion

张明学,秦喜春。松辽盆地北部升平地区深层层序地层格架及地层超覆不整合圈闭。科学技术与工程,2010,12

There are much discontinuities in rockmass, they have different, different character, different dimension and different orient. For example, bedding plane, unconformity, schistosity, fault, fissure,etc.

岩体中总是存在着各种成因不同,性质不同,大小不同和产状不同的结构面,如层面、不整合面、片理面、断层、裂隙等。

It is shown that the weak plane of sedimentary structure such as the bedding of weak plane type, sets or cosets plane, bedded plane and unconformity interface will produce main influence on the mechanical properties of sedimentary rock mass.

基于沉积结构面的成因类型,通过理论分析和实验研究,分析了沉积结构面的变形与破坏特征,研究了沉积结构面力学特征及其力学效应,提出了弱面型层理、层系或层系组界面和岩层面以及不整合面均为沉积构造弱面,这些弱面对沉积岩体力学性质产生重要的影响。

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

Under this tectonic stress, the neotectonic movement of the basin is active. The main manifestations of the neotectonics include the formation of unconformities at the end of the Miocene, the Pliocene and Quaternary within the sequences, the shift of sedimentation centers, the strong fault activities, echelon pattern of diapir structures, mud volcanoes and earthquakes.

受该应力场作用,盆地新构造运动活跃,主要表现包括中新统末、上新统与第四纪之间及层系内部的不整合,盆地的沉降,沉积中心的迁移,断裂活动,底辟带的发育与分布,泥火山和地震等。

Lishui movement is one of the important movements in the late peried of Yanshanian move ment, which refers to the diastrophism reflected by the angular discordance between Tiantai group and Younkang group.

本文以翔实的地质资料,就丽水以南吴弄口盆地的永康群与丽水南明山一带丽水盆地的天台群之间呈角度不整合接触关系,及其地层层序作了全面论述,认为它们之间存在一次重要意义的地壳运动──丽水运动。

The boundary is between the Zongshan and Jibulaformations. Both formations are disconformity.

界线上下岩层为平行不整合接触,期间有一短暂的暴露面。

Up to date the reserves discovered at shallow targ ets has exceeded 70% of total in Bohai Sea.Neotectonismis chara cterized by:(1)different Q and N center of subsidence,and angular unconformity b etween Q and N;(2)basalt effusion and magma activities frequently;(3)regular dis tribution of earthquake center;(4)intensive later faults (15-2Ma)forming multit ude anticiline in Nm-Ng formations.

目前浅层的油气储量占总储量的70%以上,这是由于海域新构造运动控制了晚期成藏,表现为:第四纪沉降中心与Nm晚期沉降中心不吻合,使得Q与N之间地层呈角度不整合;玄武岩喷发及岩浆活动频繁;沿渤南及郯庐断裂带天然地震震中有规律分布,晚期(15~2Ma)断裂极其发育,在Nm—Ng组地层内形成众多的背斜圈闭。

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