岩石

Based on studies of petrology, petrochemistry and REE geochemistry of the Muluozhai REE ore de- posit in Sichuan and the granite related to REE mineralization,it is known that the granite is nordmarkite in- stead of previously-considered biotite granite.

通过对四川木落寨稀土矿床及与成矿有关的花岗岩的岩石特征、岩石化学以及稀土元素地球化学研究表明，与成矿有关的岩石是英碱正长岩，而不是前人认为的黑云母花岗岩。

A unified strength theory was suggested for the failure criterion of rock. It can take account of the influence of intermediate principal stress on the material strength. The penetration resistance was derived for three different nose shapes: ogival, hemispherical and conical.

采用统一强度理论作为岩石的破坏准则，基于动态空腔膨胀理论研究了弹体侵彻岩石靶时所受的阻力，以及刚性弹体对岩石的侵彻深度，并分析了破坏准则、弹头形状、摩擦系数等因素对侵彻深度的影响，与试验资料进行了比较。

A detailed petrologic and mineralogic study and a forming condition calculation have been carried out on the two types of enclaves.

对这两类岩石包体进行了详细的岩石学和矿物学研究，并计算了各类岩石包体的形成条件。

The criterion is similar to hyperbolic strength criterion including uniaxial compression strength and uniaxial tensile strength, which is an extended form of Griffith-Murrell criterion essentially under the condition of polyaxial stress when hydrostatic pressure is lower, and it represents the first failure type. However, the criterion is similar to generalized Mises criterion when hydrostatic pressure is higher, and it represents the second failure type. The transition part between the two criteria represents the third failure type when hydrostatic pressure is high.

该准则包含单轴抗压和抗拉强度，在静水压力较低时，实质上它是Griffith-Murrell准则在多轴应力状态下的一种扩展形式，反映脆性岩石破坏类型1；在很高静水压力下该准则可转化为广义Mises准则，反映脆性岩石破坏类型2；而当静水压力较高时，该准则处于上述两种准则的过渡阶段，反映脆性岩石破坏类型3。

Type I is composed of rhyolitic rocks, which are characterized by higher Si and alkali contents and lower Al and Ti contents, Na2O/K2O1 and a weak negative Eu anomaly (δEu=0.65–0.95), enriched in Sr and Ba and poor in Rb. Types I and II probably formed in an extensional to postorogenic extensional environment, accompanied by compressional uplift.

提要：大兴安岭北段根河地区早白垩世火山杂岩按岩石及其地球化学特征，可划分为3类：第Ⅰ类为流纹质岩石，富Si，碱，低Al，Ti，Na2O/K2O1，具弱的负Eu异常(δEu=0.65～0.95)，富Sr，Ba，贫Rb；研究认为第Ⅰ，Ⅱ类岩石产于挤压隆升相伴的拉张至造山后伸展构造环境。

The chemical-petrographic types of these meteorites are presented below.Six are unequilibrated ordinary chondrites,including three H3 and three L3;92 meteorites are equilibrated ordinary chondrites,including 24 H-group(13 H4,10 H5,1 H6),64 L-group(2 L4,44 L5,18 L6) and 4 LL-group(3 LL4,1 LL5);the other two belong to stone-iron meteorites.In 6 unequilibrated ordinary chondrites,chondrules are well-shaped,and olivine and low-Ca pyroxene are commonly zoned and have wide ranges of composition.The olivine and low-Ca pyroxene in the other 92 equilibrated ordinary chondrites have similar composition,respectively,and to some degree it reflected thermodynamics equilibration in olivine and lowCa pyroxene.

并根据矿物-岩石学特征，划分了它们的化学-岩石类型：6块属于非平衡型普通球粒陨石(H3和L3群各3块)；92块属于平衡型普通球粒陨石，包括：H群24块(13块H4，10块H5，1块H6)，L群64块(2块L4，44块L5，18块L6)，LL群4块(3块LL4，1块LL5)；另外两块属于石-铁陨石。6块非平衡型普通球粒陨石保存了原始的岩石学和矿物化学特征，包括：清晰的球粒结构、橄榄石和低钙辉石具有明显的成分环带以及极不均一的化学组成等。92块平衡型普通球粒陨石中的橄榄石和低钙辉石显示出均一的化学组成，表明它们达到了一定的热力学平衡。

The recent research shows that granitoids rocks within the ophiolites include not only the granites formed by fractionation of MORB at low pressure, but also the granites which formed by partial melting of gabbros of ophiolites in shear zone or intruded it during the formation and evolution of the ophiolite.

近年来的研究表明，蛇绿岩中的花岗质岩石不仅包括直接由大洋玄武质岩浆结晶分异形成的花岗质岩石，即传统意义上的大洋斜长花岗岩，还包括蛇绿岩在形成、演化过程中本身形成的和侵入的花岗质岩石。

Sunlight makes many of them appear to be the color of fire. Some of the most unusual kinds of rocks in the park are called hoodoos. They are tall and thin, and seem to grow from the canyon floor. Their colors are bright red, orange and yellow.

在阳光的映照下，岩石的表面产生像火一样的颜色，还有一些较为不寻常的岩石类型在公园被称为巫毒--&hoodoos&，这种岩石都很长很薄，而且似乎还在不断的生长，它们的颜色有鲜红色、橙色和黄色。

If rock compressibility is calculated by the elastic modulus method, its results are relatively reasonable. But if it is calculated by the Hall Plate empirical formula, the value of rock compressibility is too large. Thai's to say, it overvalues the elastic energy of formation rocks. And the velocity of pressure drawdown of the gas reservoir numerical simulation is caused to be too slow.

由Hall图版经验公式法计算得到的岩石压缩系数偏大，即对地层岩石的弹性能量估计偏大，从而导致气藏数值模拟计算的压降速度偏慢；而采用弹性模量法计算岩石压缩系数，其结果相对较为合理。

The result shows that when in-place oil with its viscosity higher than 1.0mPa·s percolates through reservoir rocks with permeability less than 1×10~-3 μm~2, both have start-up pressure gradient, and it increases with the decrease of rock permeability and increase of crude oil viscosity, as oil wettability of the rocks increas...

结果表明，粘度大于1·0mPa·s的地层油通过渗透率小于1×10-3μm2的地层岩石渗流时，均具有启动压力梯度，且启动压力梯度随岩石渗透率的减小和原油粘度的上升而增大；岩石的亲油性增强，启动压力梯度增大；含有束缚水的岩样的启动压力梯度大于不含有束缚水的岩样。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。