地层

One of the main purposes of the study is to divide the units of fluid stratigraphy.

流体地层学研究的主要内容之一，就是要划分出流体地层单元。

Sequence analysis on strata is very important in academic study of stratigraphy and petroleum exploration.

层序地层分析在地层学理论研究和石油勘探开发中有着重要的地位。

In the paper, the newest recognization about basic principle and controlling factores of sequence stratigraphy is analysed.

本文分析了层序地层学的基本原理、控制因素等方面的最新认识，总结了层序地层学4大发展方向。

To analyze the pseudo phenomena caused by migration velocity error, the paper firstly studied the depth error between post-stack migration and prestack migration caused by same velocity error, and found the depth error was only relative to velocity error and had no direct matter with methods of depth migration (post-stack migration or prestack migration). Then the paper did numerical simulation of a complex lenticular body model with wave-equation modeling and migration, and found that the velocity error could not only induce depth error, but also could change the modality of construction and the event of subjacent layers. Furthermore, it could change the frequency of reflective event. They are the pseudo phenomena caused by migration.

从分析偏移速度误差带来的各种假象出发，本文首先对比分析了速度误差对叠后深度偏移和叠前深度偏移的影响，发现偏移剖面的深度误差仅与速度模型的误差有关系，与具体的偏移方法没有直接的关系；然后对一个复杂的透镜体模型进行了波动方程叠后正演和偏移计算，详细地讨论了不同的速度误差带来的各种假象，发现速度误差不仅会带来深度误差，而且会造成构造体的形态变化，下覆地层同向轴的扭曲，还可能引起地层同向轴的频率发生变化，给资料解释带来一定的假象。

The study of Namurian Flora is not so well advanced because of the limited geographic distribution of the plants in the world, even the stage had been taken place by Serpukhovian and Bashkirian due to the middle borderline between Upper and Lower Carbeniferous passing through the ammonite subzone E2 and subzone H1 of Namurian A, thus there are not so many practical papers subjected to the plants of this stage like the other periods these years.

纳缪尔期植物群的研究工作因受到该期地层分布的局限性而不如其他地史时期植物群研究地深入，甚至由于纳缪尔阶A期菊石E_2与H_1亚带之间的界线亦是上下石炭统的分界线，所以在近年来的《国际地层表》中该阶名也逐渐被塞普霍夫阶和巴斯基尔阶所代替。

But the symmetric axis of TI formation is parallel to the borehole axis in the thesis, the propagation velocity of SV-wave and SH-wave are the same in vertical direction, we can't see the splitting phenomena of shear wave.

本文中地层对称轴和井轴平行，SV波和SH波在竖直方向上的传播速度是相同的，本文地层模型下的井孔中是观测不到横波劈裂现象的。

Compared with the similar regions of orther countries, the area of geo synclinal structural layer of china such as North china etc.

与国外同类地区相比，我国老地层分布区的产金率远远低于其它地区，这说明，这些地洼区的老地层内还有相当大的金矿潜力没有挖掘出来。

The trinomial deliverability equation can be determined based on the data of bottomhole flow pressure and gas production by using the rate multipleregression, and the open flow capacity and static formation pressure can also be derived.

为此，提出了一种精度高且计算简便的方法，不需要已知地层静压，只通过井底流压与产气量数据，利用多元线性回归方法，既可确定气井三项式产能方程，还可求得气井绝对无阻流量和地层静压。

It is found that,through sliding zone soil mineral component and water-soil interaction analysis,the principle reason of landslide is that coal measure strata turves soil contains certain proportional hydrophilic mineral ,and its mechanical index will fall greatly after water-soil interaction.

以京珠高速粤境北段k18+170~k18+225滑坡为例，研究了煤系地层滑坡机理，通过对滑动带土的矿物组成及其物理力学性质分析，发现该类边坡滑坡的主要原因是煤系地层中的泥炭土含有一定比例的亲水矿物，在水的作用下力学性质发生大幅度降低。

The earth is not a mere fragment of dead history, stratum upon stratum like the leaves of a book, to be studied by geologists and antiquaries chiefly, but living poetry like the leaves of a tree,which precede flowers and fruit —— not a fossil earth, but a living earth; compared with whose great central life all animal and vegetable life is merely parasitic.

大地不只是已死的历史的一个片段，地层架地层像一本书的层层叠叠的书页，主要让地质学家和考古学家去研究；大地是活生生的诗歌，像一株树的树叶，它先于花朵，先于果实；——不是一个化石的地球，而是一个活生生的地球；和它一比较，一切动植物的生命都不过寄生在这个伟大的中心生命上。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失