地层

According to drilling, logging and seismic data in the north of the basin, four types of identification signs were determined to the Phanerozoic sequence boundary. And two kinds of sequence boundaries (unconformity and shift surface of deposition) were identified.

应用层序地层学的原理和方法，综合研究盆地北部钻井、测井及地震资料，确定4种层序界面识别标志，在盆地北部新生代始新世—中新世识别出2种类型层序界面：不整合面和沉积作用转换面。

The results show that the δ13C of the alkyl naphthalene and alkyl phenanthrene are between -20 ~-28‰, which is richer 13C than that of marine source.

结果表明，来源于煤系地层的烷基萘、菲的δ13C值主要分布在-20 ~-28‰，相对于海相来源的明显富集13C，可作为探讨有机质来源以及原油对比的新指标。

In this paper, the petrology, mineralogy and geochemistry of basic-ultrabasic volcanic rock, granite and skarn related to the Sn-Cu skarn-type ore and the vein-type ore in Laochang ore field have been researched systematically, some conclusions are summarized as follows:In Gejiu tin-polymetallic district, the middle Triassic volcanic rocks belonging to calc-alkaline basalt-tholeiite serie, mainly consist of pyroxene, hornblende, feldspar, chlorite and phlogopite; All the granites are peraluminous granites related to the Yanshanian collision-orogeny. Laoka granite closely related to the tin-polymetallic deposits emplaced in the post- orogenic.The metal elements show obviously vertical zones with the variety of skarn types in dimensional extension; The occurrence of garnet skarn and diopside skarn alternately developed in the horizontal zones of the contact between granite and carbonatite are mainly related to two factors: one factor is the infiltration metasomatism of post-magmatic hydrothermal solution, the another is the metrical strata of marble and calcic-dolomite developed in country rocks.

本文重点以老厂矿田中的接触带锡铜矿床和脉状矿床为研究对象，采用化学分析、ICP-MS、X射线粉晶衍射分析、电子探针等测试手段，对本区与成矿相关的基性-超基性火山岩、花岗岩、夕卡岩、电气石-石榴石等进行了系统的地质地球化学研究，研究表明：个旧矿区中三叠纪个旧组地层中的火山岩为钙碱性玄武岩-拉斑玄武岩系列，岩石为辉石-角闪石-长石-绿泥石-金云母组合；本区的花岗岩为过铝质花岗岩，主要与燕山期碰撞造山作用有关，锡多金属成矿与形成时代最晚、分异较好的花岗岩关系密切；本区夕卡岩中的有用共生组份随着夕卡岩类型及其矿物组合的不同具有明显的分带性。

Nearly all the animal phyla appear in the rocks of this period, without a trace of the evolutionary ancestors that Darwinists require.

大约在六亿年之前，几乎所有动物的'门'同时在地层中出现，完全没有达尔文主义者必须有的祖先的痕迹。

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 Dam area is located in Weixi city of YunNan province,whose climate is sub-thermal or the mountain plateau temperate monsoon,the regional water system developed,the exposed strata are mainly limestone、dolomite、schist and phyllite, the aquifer and the Impermeable layers are separated each other.

坝址区位于云南身维西县境内，属亚热-温带季风高原山地天气，区内水系发达，出露的地层主要为泥盆系的灰岩、白云岩及片岩、千枚岩，呈含水层与隔水层互层状构造。

Ground subsidence caused by underground coal mining is a space-time process. Coal seam pitch is one of the most important factor which determine movement and failure forms of overlying rock and the level of ground movement and deformation.

地下煤层采出后引起的地表沉陷是一个时间和空间过程，煤系地层倾角是决定上覆岩层的移动和破坏形式及地表移动与变形程度的重要因素之一。

Also, the pressure of strata lying above placation pressure had much influence on the formation of rocks.

地层间的相互挤压力是岩石的形成的另一原因，而且岩层相互挤压会使沉积岩更加牢固。

Up to the present, research has failed to furnish sufficient data to explain the formation of the placation 褶皱,皱纹地层折叠的作用或过程 regions.

迄今为止还没有足够科学资料能解析庐山的地质构造，或许庐山是因岩层在高温下成液态流动而形成的。

However, studies on the height of planation surface, Jurassic strata and coal strata show that the average uplifting rate of the Tianshan Mt. is about 0.085-0.146 mm/a since 24 Ma.

通过对天山最高一级夷平面、野外实测侏罗纪地层高程及天山发育的煤层的相对隆升速率的研究则表明天山自24 Ma以来平均的隆升速率约为0.085～0.146 mm/a。

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