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The results indicate the reservoir is characterized by low-permeability, low compositional and structural maturity, abundant plastic lithic fragment and matrix.

结果表明,该区沙二上4-7砂层组为小型闭塞陆相断陷湖盆三角洲前缘沉积,其岩石成分和结构成熟度低,塑性岩屑和杂基含量高,属于低渗透储层,目前处于晚成岩A1亚期。

On the basis of the above sedimentary research, combining the identification of well logging and seismic facies. The detailed research on the character and space-time evolvement of the lithofacies-paleogeography of Silurian-Devonian has been carvied out, and the research indicates that in the process of sedimentary evolvement, the character of lithofacies paleogeography is different in each phase, but it is succession.

在上述沉积相研究基础上,结合测井相、地震相的识别,对塔里木盆地志留-泥盆系岩相古地理特征及时空演化进行了详细研究,研究表明在志留-泥盆纪沉积演化过程中,岩相古地理分布特征在各个时期存在差异性,但在整个古地理演化过程中,又具有继承性。

The Devonian is the source bed of gold, and phyllite, slate, schist and siltstone are important source rocks.

金在地层中的分布受岩性和沉积环境的控制,泥盆系是本区金成矿的矿源层,其中千枚岩、板岩、片岩、粉砂岩是金矿的重要源岩。

The Late Paleozoic volcanic rocks widely outcropped in the south margin of the Altai Mountains, in which the Middle Devonian Beitashan Formation consists of a series of volcanic-sedimentary rock predominated by intermediate-basic volcanic with rare picrite and ankaramite at the base.

阿尔泰山南缘晚古生代火山岩十分发育,其中中泥盆世北塔山组为一套以中基性火山岩为主的火山-沉积岩系,并且其下部发育少见的苦橄岩和富辉橄玄岩。

The Lazhulong-Jinshajiang ophiolites occurred at archipelagic ocean that opened in Late Permian to Early Triassic and closed until Late Triassic that is a epeirogenic process characterized by "soft collision" that show lentiform and faulting ophiolites, folding marine strata, and accretionary wedge.

该蛇绿岩形成于晚二叠世至早三叠世多岛小洋盆环境,并在晚三叠世末期随古特提斯的闭合而构造侵位,这是一个以软碰撞为特征的造陆过程,伴生蛇绿岩体透镜体化和构造肢解、海相沉积岩褶皱变形和增生楔逆冲作用。

The lithology of the hanging wall is fine-grained sandstone, sandstone and shale in Cambrian, and dolomite, dolomitic limestone of Devonian in foot wall. The main ground rupture is located at the boundary of two stratums.

主断裂的地表破裂集中位于两个地层的不整合面上,上盘为寒武系细砂岩、砂页岩,下盘为泥盆系白云岩、白云质灰岩。

Based on the geological background , ore?deposit and structural geology, the paper analyzed the geological character istics and metallogenic mechanism of the gold deposit and suggests that the deposit occurring in the limestone and metamorphic siliceous rocks in the third litholog ic unit of Devonian Tuokesalei formation is controlled by the Duolanasayi shear zone characteristic of secondary shear deformation, mineralizaion and multiphased vei n mineralization?.

笔者从地质背景、矿床地质,以及控矿构造分析了多拉纳萨依金矿矿床特征及其成矿机理;明确了矿床产于泥盆系托克萨雷组第三岩性段的灰岩-浅变质-硅质岩系,受控于多拉纳萨依韧性剪切带;控矿构造具有二次韧性剪切变形、矿化和多期次脉体矿化的特征,显示出构造活动的多期次性与复杂性,阐明了构造期次与矿化之间的关系。?

Gold mineralization in the area occurs in Devonian and Carboniferous Systems including three Au mineralization belts, that is the north, middle and south belts. Au deposits or occurrences are located in the inner and outer contact zones of Indosinian apophyses and EW faults.

区内金矿化赋存于泥盆系和石炭系中,构成北、中、南3条金矿化带,金矿床定位于EW向断裂和印支期岩枝内外接触带中,断裂构造与岩枝是主要控制因素。

This suggests that subduction of a paleo-ocean basin occurred between the Paleoproterozoic North China craton and Qaidam craton.

因此推测斜长角闪岩的原岩为不同程度部分熔融的岩浆弧作用的产物,说明在古元古代华北克拉通和柴达木克拉通之间存在古洋盆的俯冲消减。

In the Eogene and Neogene, Qaidam Basin experienced the multiphase tectonic movement; the paleoclimate evolved from warm-humid to arid; the water in the basin was gradually salinized; the depocenter migrated from west to east. The master factors and developmental characters of lithologic hydrocarbon reservoirs have their own particularity. Taking the fine exploration zones of the southwest hydrocarbon-rich depression in Qaidam as the key point, with the analysis of source-rock distribution, sedimentary evolution and sedimentary system distribution, the author proposes that the density difference increases after the fluvial water enters, then clam and bar sand bodies are formed easily due to density flow. Highstand system tract and transgressive system tract below the maximum flooding surface are the main exploration areas of lithologic reservoir.

柴达木盆地古近纪-新近纪经历了多期构造运动,古气候由温湿向干旱演变、湖盆逐渐咸化、沉积中心由西向东迁移的演化过程,地层岩性油气藏的主控因素和发育特征有其特殊规律,以柴达木盆地柴西南富油气凹陷精细勘探区带为重点,通过分析烃源岩展布、沉积演化和主要沉积体系展布,提出咸化湖盆在河流入湖后因密度差较大,易形成密度流等成因的各类滩坝砂体,最大湖泛面之下的高位体系域、湖侵体系域是地层岩性油气藏的主要勘探领域。

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呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

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