查询词典 rocks

Its rock types are more complicated, which include siliceous rocks、mudstones、clastic rocks、carbonate rocks and transitional rock types between them.

岩石类型也很复杂，包括硅质岩、泥岩、碎屑岩、碳酸盐岩及其过渡类型的岩石。

The Ordos Basin is a large-scale sedimentary basin in Northwest China. From bottom up, the hydrostratigraphic units in the basin are pre-Cambrian metamorphic rocks, lower-Paleozoic carbonate rocks, upper-Paleozoic to Mesozoic clastic rocks and Cenozoic deposits.

鄂尔多斯盆地是我国西北地区的大型构造沉积盆地，以前寒武系变质岩为基底，依次沉积了下古生界碳酸盐岩、上古生界一中生界碎屑岩和各种成因的新生界，总厚度达6000m。

This rocks have high content of organic carbon, low content of chloroform"A"and potential hydrocarbon-forming which indicates the original hydrocarbon source rocks of lower Cambrian were better oil-forming rocks, but the actual oil-forming potential are poor.

研究表明，该套烃源岩有机碳含量高，氯仿沥青&A&含量和生烃潜量较低，说明本区下寒武统原始烃源岩是最好的生油岩，由于演化程度过高，现实的生油潜能较差。

The results show that the white thick-bedded siliceous rocks have high contents of SiO2 and Al2O3 and high ratios of Al/ and Al2O3/(Al2O3+ Fe2O3). The ∑REE are low, and the North American shale-normalized REE patterns are characterized by enrichment of LREE and absence of Eu and Ce anomalies, which suggest that the white thick-bedded siliceous rocks might have been formed in the continental margin environment and affected significantly by terrigenous constituents. The anatase-rich siliceous rocks have high contents of TiO2, Fe2O3, Cu and V but low Al/(Al + Fe+ Mn) and Al2O3/(Al2O3 + Fe2O3) ratios. The ΣREE are high, the North American shale-normalized REE patterns are obviously characterized by left-oblique to flat styles of curves and slight negative Ce anomalies, implying that they might have been formed in an oceanic ridge environment.

研究结果表明，呈厚层状产出的无矿白色硅质岩具较高的SiO2、Al2O3含量及Al/、Al2O3/(Al2O3+Fe2O3)比值，稀土元素总量很低，其北美页岩标准化配分模式为向右倾的曲线，无明显铈异常和铕异常，表明其形成于受陆源影响的大陆边缘构造环境；赋矿岩系中薄层状富钛硅质岩的TiO2、Fe2O3、Cu、V含量较高，但Al/、Al2O3/(Al2O3+Fe2O3)比值较低，稀土元素总量较高，北美页岩标准化曲线为明显左倾型－平坦型，具弱的负铈异常，表明其形成于洋脊及附近环境。

Rockbolts which can make full use of the self-strength of rocks and soils around and enhance the load-supporting of rocks and soils and save the engineering materials are wildly used in the support of adjacent rocks of tunnels and reinforcement of roadbed and slopes, to be one of the most effective and economic support method in geotechnical engineering.

锚杆支护作为岩土体结构加固的一种常用方法，由于能充分调动锚杆周围的岩层自身强度，显著增强周围地层的承载能力，节约工程材料，从而成为解决岩土工程稳定性问题最经济、有效的方法之一，被广泛应用于隧道围岩支护、路基加固以及边坡稳定加固等岩土工程中。

The source rocks in the study area are mainly from acid, intermediate-basic igneous rocks and some metamorphic rocks. They are mixed products.

研究区内沉积岩母岩主要来自于酸性、中基性岩浆岩和部分变质岩，为混源产物。

Four facts about this belt are analyzed in this work:(1) typical mantle metasomatism existing in the volcanic rocks and in their inclusions,(2) the distribution range of the Krich volcanic belt estimated according to the K2O/Na2O ratio of the volcanic rocks,(3) the "cold spring and taele phenomenon" caused by adiabatic expansion of the mantle gases, and (4) the current situation of seismic activities.

文中重点论述了以下4点内容：(1)火山岩及其包体中存在典型的地幔交代作用；(2)根据火山岩K2O/Na2O比值勾画出富钾火山岩带范围；(3)地幔气体的绝热膨胀导致"冷泉和冻土现象"；(4)地震活动的现状。

Based on the primacy aeolotropy rock, transversely isotropic rocks is hypothesized. With the theory of the stress distribution of the rockmass, disaster character of tunnel excavating in the type of transversely isotropic rocks is analyzed, and some strategy and technology of uniso-intensity support are raised.

论文以原生型各向异性物质特征为基础，以岩体横观各向同性为假设条件，利用前人的理论研究结果，对于隧道开挖在此类各向异性岩体中的破坏特征进行了分析和总结，提出了不等强支护的策略技术。

It is concluded that, first, geochemical data of the surface soils can clearly distinguish two kind of soils, that is, juvenile soils, for example, purple soils, which inherits most geochemical characteristics of the parent rocks or materials, and anthropic soils, the geochemical characteristics of which have been greatly changed as the results of intensive impact from variety of agricultural uses. Second, different soils have typical indicator elements association respectively due to different parent rocks or materials and utilization, such as purple soils, yellow soils (low alkali and alkaline-earth metal contents and pH value), paddy soils (high organic element and heavy metal elements contents) and fluvo-aquic soils (high rock-forming accessory mineral elements contents) and so on. Consequently, it can be suggested that elements association is an important indicator for two key factors (parent materials and anthropic activities) of soil classification. Third, some differences exist between soil genesic classification and result of cluster analysis, because geochemical characteristics of surface soils can not completely represent the foundation applying to soil genesic classification, that is, condition and process of soil-forming, and soil property.

结果表明：浅层土壤的地球化学数据能较好地用来区分两类土壤，即紫色土一类的幼年土壤（在很大程度上继承了母岩、母质的地球化学特征）和受强烈人为活动水耕、早耕熟化的土壤（外来物质的不断加人显著地改变了浅层土壤原有的地球化学性质）；(2)各类土壤因母岩母质和利用方式不同，各具明显的标志性元素组合特征，如紫色土、黄壤（低碱和碱土金属元素和pH值）、水稻土（高有机元素、肥料元素和重金属元素）和潮土等，因此，这些元素组合是土壤分类两个要素的重要参照系；(3)浅层土壤的地球化学特征不可能完整地体现成土条件、成土过程和土壤属性这三个发生分类依据，因此，聚类分析结果与发生类型之间存在一定的差异。

Major conclutions from this study can be summarized as following:1. On mineralogy, rutiles, apatites, epidotes and vein minerals from UHPM rocks were firstly and systematically studied, by detailed petrography and mineral-chemistry investigation, some mineral or mineral assemblage with special composions or texture were firstly found in UHPM rocks from Sulu-Dabie, for example, corrudum, magnesite, high-Ti biotite and garnet were found as inclusions in rutiles from eclogites, Nb-Fe rutile and zoned Si-Y apatite were found in gneiss, epidote / allanite with euhedral zones like magmatic genesis were found in elogites and gneiss, a lot of minerals with high REE, HFSE, LILE and volatiles were found in veins of gneiss.

在矿物学方面，首次较为系统地研究了超高压变质岩中的金红石、磷灰石、绿帘石等副矿物，并通过详细的岩相学和矿物化学研究，首次在苏鲁-大别超高压变质岩中发现了一些具有特殊成分/结构的矿物或矿物组合，如在榴辉岩金红石中发现了刚玉、菱镁矿、高钛黑云母和石榴石矿物包裹体，在片麻岩中发现了Nb-Fe金红石和具有自形环带结构的高Si-Y磷灰石，在榴辉岩和片麻岩中发现了具有类似岩浆成因的自形生长环带结构的绿帘石/褐帘石，在片麻岩的脉体中发现了大量富含稀土元素REE、高场强元素HFSE(Nb、Ta、Zr、Ti)、大离子亲石元素LILE(K、Th、U、Sr、Ba)，以及挥发性组份(CO_2、F、P、S)的特殊矿物，丰富并提升了超高压变质岩的矿物学研究。2。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。