查询词典 sandstones

The garnets in Cretaceous sandstones come from blueschist that located in the southwest Tianshan and low-grade metamorphic rocks by lager proportionally. The garnets in Tertiary sandstones enrich almandine, which come from high-grade metamorphic rocks.

白垩系砂岩中的石榴石来自西南大山蓝片岩和低级变质岩的比例较大，而第三系砂岩中的石榴石中富铁铝榴石组分，多来自高级变质岩。

The paragenetic sequence of outcrop sandstones may induce to ealy compaction diagenetic facies、carbonate cementation diagenetic facies and feldspar dissolving diagenetic facies, the diagenetic facies of core sandstones are ealy compaction diagenetic facies、ankerite diagenetic facies、authigenetic quarze and kaolinite filling diagenetic facies.

露头砂岩的成岩组合可归纳为早期压实成岩相、碳酸盐胶结成岩相和长石溶解成岩相，岩芯砂岩成岩相为早期压实成岩相、铁白云石胶结成岩相、自生石英与高岭石充填成岩相。

The high porosity zone occurrence of the Tertiary reservoir composed of clastic rocks in the Yuanyanggou region is controlled by diageneses and sedimentary facies, lying in the early diagenetic stage A ~ the late diagenetic stage A1 and the area of the sandstones developing in debouch bar, braided-divided flow channel, raised bank and channel bar is namely high porosity zone development of the lower Shasan Member (Es33) and the upper-middle Shasan Member (Es31-2); furthermore, lying in the late diagenetic stage A2 and the area of the sandstones developing in debouch bar, braided-divided flow channel, raised bank and channel bar is namely high porosity zone comparative development of the lower Shasan Member (Es3) and the upper-middle Shasan Member (Es31-2), the physical property of the reservoir is relatively worse.

鸳鸯沟地区第三系碎屑岩储层高孔带分布受成岩作用和沉积相的控制，处于早成岩阶段A期～晚成岩阶段A_1期，且有河口坝、辫状分流河道、天然堤和心滩沉积微相砂体发育的区域即为该区沙三下亚段和沙三中上亚段储层高孔带的发育区；而处于晚成岩阶段A_2期，且沉积相也为河口坝、辫状分流河道、天然堤和心滩沉积微相砂体发育的区域即为鸳鸯沟地区沙三下亚段和沙三中上亚段储层高孔带的较发育区，储层物性相对较差。

The findings indicate that under uniaxial compression, the red sandstones at first experience structural intensification and then structural degradation until they are failed; the unconfined compressive strength of red sandstone is mainly related with compaction rate, pore distribution and connecting condition of mineral grains; and the above factors have a more notable impact on the unconfined compressive strength of red sandstone with the increase of weathering; with the increase of load, the grains area ratio and Euler number decrease, the pore develops towards centralization or collectivization, and the red sandstones gradually lose their resistance to deformation.

研究结果表明：在单轴压缩条件下，红砂岩先结构强化，后结构劣化，直至最终破坏；红砂岩的单轴抗压强度主要与密实程度、微孔洞等缺陷的分布情况及矿物颗粒之间的联结状态有关，随着红砂岩风化程度的增强，以上各因素对其单轴抗压强度的影响将更加显著；伴随荷载的增加，红砂岩的矿物颗粒面积比例及欧拉数总体上趋于减小，孔隙向着集中化和集团化的趋势发展，红砂岩抗变形能力逐步丧失。

In order to describe mechanical properties of red sandstones under different water ratio, by means of statistical damage theory and strain-equivalence hypothesis statistical damage model of red sandstones with effect of water ratio considered is developed.

为了描述红砂岩随含水率不同，所反映出来的力学特性，本文运用损伤统计理论和Lemaitre应变等价性假说，推导出能反映含水率影响的红砂岩损伤统计模型。

According to authigenetic mineral association and nowadays stratum geochemistry character, combining the diagenesis character of sandstone in coal measure strata, it is thought to the fluid of outcrop sandstones went through ealy acidity- acidity-alkality-surficial acidity 4 fluid phases, the fluid evolution of core sandstones is ealy acidity- acidity- nowadays alkality 3 fluid phases.

由自生矿物组合以及现今地层水地球化学特征，结合煤系地层砂岩成岩作用特征，认为露头砂岩的流体经历了早期酸性－酸性－碱性－地表酸性4个流体阶段，岩芯砂岩的流体演化为早期酸性－酸性－现今碱性3个流体阶段。

The study shows that the advantageous sandstones in the area have the following distribution characteristics: in the environment of growth faults, sandstones are mainly distributed in the downthrown block of a boundary fault; in a lowstand systems tract, sandstones are mainly distributed in lowstand wedges, slope fans, basin-floor fans, fan deltas, deltas and submarine canyons; in a transgressive systems tract, sandstones are mainly distributed in sandbars and sand-beaches; and in a highstand systems tract, sandstones are mainly distributed in deltas, fan deltas and submarine fans.

并指出有利砂体的分布特征：低水位体系域，砂体主要分布在低水位楔、斜坡扇和盆底扇；高水位体系域，主要分布在三角洲、扇三角洲、海底扇和峡谷水道。研究表明，以层序地层学理论为指导，划分层序和体系域，进而对有利砂体进行预测，对该地区油气勘探有重要指导意义。

Though stating sandstone thin-section's clastic constituents of outcrop sandstones and core sandstones,collecting sandstones' clastic constituents datas from Jican1 core、Ji3 core、XijiD2 core and JiD6 core,it's judged to the roke type be detritus feldspar sandstone and feldspathic detritus sandstone of outcrop sandstones and core sandstones in studied layer, the mostly roke being detritus feldspar sandstone.

通过统计46块露头砂岩和13块西风井砂岩薄片的碎屑组分，结合收集的鸡参1井、鸡3井、新鸡D2井和鸡D6井9块砂岩碎屑组分含量数据，判断出研究目的层露头砂岩和岩芯砂岩的岩石类型为岩屑长石砂岩和长石岩屑砂岩，主要为岩屑长石砂岩，两种砂岩的岩石学特征基本一致。

On the base of diagenesis' study, the three paragenetic associations of outcrop sandstones are identified, the paragenetic associations of core sandstones have two kinds, ther are two common paragenetic associations between outcrop sandstones from core sandstones.

在成岩作用的研究基础上，露头砂岩共识别出3种成岩共生组合，岩芯砂岩为2种成岩共生组合，其中，露头砂岩和岩芯砂岩共有的2种成岩共生组合。

The purpose of paper is to describe the petrology character of outcrop sandstones and core sandstones and judge their roke type, compare the similarities and differences of autogenetic mineral、diagenesis types、intergrowth sequence、diagenetic facies、diagenetic phase of outcrop sandstones and core sandstones, provide academic precondition condition for studying better reservoir in studied region.

本次论文的研究目的是描述露头砂岩和岩芯砂岩岩石学特征并判断其岩石类型，比较露头砂岩与岩芯砂岩在自生矿物、成岩作用类型、共生序列、成岩相、成岩阶段以及成岩流体演化方面的异同，为研究区有利储层的研究提供理论前提条件。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。