petrographic

简明释义

英[ˌpetrəˈɡræfɪk]美[ˌpetroʊˈɡræfɪk]

adj. 岩相学的；岩类学的

英英释义

单词用法

同义词

反义词

例句

1.By means of SEM, EDAX and om, the petrographic structure and microscopic chemical composition of cement clinker have been researched by adding rare-earth lean ore.

采用SEM、EDAX、OM等分析测试方法，研究了稀土贫矿掺加条件下，水泥熟料的岩相结构及其微区化学组成。

2.The abnormal transformation of smectite clay minerals in central Junggar Basin is analyzed according to the petrographic thin section and X - ray diffraction data.

利用岩石薄片和X射线衍射资料，分析了准噶尔盆地腹部地区蒙皂石粘土矿物的不正常转化。

3.This paper explains slag erosion mechanism of middle grade MgC brick based on petrographic analysis after the slag erosion, as well variation of the slag composition before and after the slag erosion.

根据渣侵后镁碳砖的岩相和渣侵前后钢渣成分的变化，阐述了中档镁碳砖的渣侵机理。

4.The origin of the usual siliceous stone in float glass was discussed on the basis of petrographic examination and its formation mechanism analysis. A solution to this kind of stone was proposed.

通过对实际生产中各种常见硅质结石缺陷的岩相鉴定及生成机理分析，对该类结石来源进行探讨，并提出解决的办法。

5.In petrographic terms, this stone is defined as volcanic tufa.

地质学上，此石材属于火山凝灰岩。

6.Through accurate description and dissection of deltaic front outcrops, 11 petrographic facies types are established.

通过对三角洲前缘露头的精细描述和解剖 ，建立了研究区 1 1种岩石相类型。

7.By adopting the analytic methods such as thermal-gravimetric analysis and petrographic analysis, an appraisal research on burning characteristics of the composite coal is made.

采用热重分析和岩相分析等方法，对复杂煤种的燃烧特性进行了评价。

8.The relation between the character of the flotation feed and the petrographic constituents of raw coal and especially the flowsheet is briefly described.

扼要地概括浮选原料的性质与原煤的岩相组成的关系，特别是和工艺流程的关系。

9.Because the properties of maceral groups are not similar, the difference of petrographic constituents should be taken into consideration when Datong coal is utilized or studied.

因为各显微组分组的性质不同，所以对大同煤的研究和利用必须考虑其煤岩组成的差别。

10.The geologist conducted a detailed petrographic analysis of the rock samples to determine their mineral composition.

地质学家对岩石样本进行了详细的岩石学分析，以确定其矿物成分。

11.The university offers a course on petrographic techniques for students interested in geology.

该大学为对地质学感兴趣的学生提供关于岩石学技术的课程。

12.Her thesis focused on the petrographic study of metamorphic rocks in the Appalachian region.

她的论文集中于对阿巴拉契亚地区变质岩的岩石学研究。

13.In the petrographic report, the author described the textures and structures found in the sedimentary layers.

在岩石学报告中，作者描述了沉积层中发现的纹理和结构。

14.Understanding the petrographic characteristics of volcanic rocks can provide insights into past eruptions.

理解火山岩的岩石学特征可以为过去的喷发提供见解。

作文

The study of rocks and their composition is a fundamental aspect of geology, and one of the key terms associated with this field is petrographic. The word petrographic refers to the branch of geology that focuses on the detailed description and classification of rocks, particularly through the examination of thin sections under a microscope. This scientific discipline plays a crucial role in understanding the history and formation of the Earth's crust, as well as the processes that have shaped it over millions of years.In essence, petrographic analysis allows geologists to identify the mineral constituents of rocks, their textures, and their structural features. By preparing thin slices of rock, typically around 30 micrometers thick, scientists can observe the intricate details that are not visible to the naked eye. This microscopic examination reveals valuable information about the environment in which the rock was formed, including temperature, pressure, and the chemical conditions present at that time.For instance, when studying igneous rocks, a petrographic analysis can help determine whether the rock is volcanic or plutonic based on its mineral composition and texture. Volcanic rocks, such as basalt, typically have a fine-grained texture due to rapid cooling, while plutonic rocks, like granite, cool slowly beneath the Earth's surface, resulting in larger crystals. Understanding these distinctions is vital for geologists, as it informs them about the geological history and tectonic activity of an area.Moreover, petrographic studies extend beyond igneous rocks to sedimentary and metamorphic rocks as well. In sedimentary rocks, the petrographic approach can reveal information about past environments, such as whether a rock was formed in a freshwater or marine setting. Similarly, in metamorphic rocks, the identification of specific minerals can indicate the conditions of temperature and pressure that the rock has undergone during its transformation.In addition to its academic importance, petrographic analysis has practical applications in various industries, including construction, mining, and environmental science. For example, in the construction industry, understanding the petrographic properties of aggregate materials is essential for ensuring the durability and stability of concrete structures. Likewise, in mining, identifying the mineral composition of ore can lead to more efficient extraction methods and better resource management.Furthermore, petrographic techniques are increasingly being used in environmental studies to assess soil and rock contamination. By analyzing the petrographic characteristics of contaminated sites, scientists can devise effective remediation strategies to restore the health of ecosystems.In conclusion, the term petrographic encapsulates a vital aspect of geology that aids in the understanding of rocks and their formation. Through meticulous analysis of rock samples, geologists can uncover the stories behind the Earth's geological processes. As technology advances, the role of petrographic studies will continue to evolve, providing deeper insights into our planet's history and informing sustainable practices in various fields. This highlights the importance of petrographic research in both academic and practical contexts, making it an indispensable tool for geologists and scientists alike.

岩石及其成分的研究是地质学的一个基本方面，其中一个与该领域相关的关键术语是petrographic。这个词petrographic指的是地质学的一个分支，专注于通过显微镜下的薄片检查对岩石进行详细描述和分类。这一科学学科在理解地球地壳的历史和形成过程，以及塑造地球的过程方面发挥着至关重要的作用。从本质上讲，petrographic分析使地质学家能够识别岩石的矿物成分、纹理和结构特征。通过制备薄片，通常厚度约为30微米，科学家可以观察到肉眼无法看到的复杂细节。这种显微镜检查揭示了有关岩石形成环境的宝贵信息，包括当时的温度、压力和化学条件。例如，在研究火成岩时，petrographic分析可以帮助确定岩石是火山岩还是深成岩，基于其矿物成分和纹理。火山岩，如玄武岩，通常由于快速冷却而具有细粒纹理，而深成岩，如花岗岩，则在地球表面下缓慢冷却，形成较大的晶体。了解这些区别对地质学家至关重要，因为它们为他们提供了关于一个地区地质历史和构造活动的信息。此外，petrographic研究不仅限于火成岩，还扩展到沉积岩和变质岩。在沉积岩中，petrographic方法可以揭示关于过去环境的信息，例如岩石是在淡水还是海洋环境中形成的。类似地，在变质岩中，特定矿物的识别可以指示岩石在转变过程中经历的温度和压力条件。除了其学术重要性外，petrographic分析在建筑、采矿和环境科学等各个行业也有实际应用。例如，在建筑行业，了解骨料材料的petrographic特性对于确保混凝土结构的耐久性和稳定性至关重要。同样，在采矿中，识别矿石的矿物成分可以导致更有效的开采方法和更好的资源管理。此外，petrographic技术越来越多地用于环境研究，以评估土壤和岩石污染。通过分析受污染地点的petrographic特征，科学家可以制定有效的修复策略，以恢复生态系统的健康。总之，术语petrographic概括了地质学的一个重要方面，有助于理解岩石及其形成。通过对岩石样本的细致分析，地质学家可以揭示地球地质过程背后的故事。随着技术的进步，petrographic研究的角色将继续演变，提供对我们星球历史的更深入见解，并为各个领域的可持续实践提供信息。这突显了petrographic研究在学术和实际背景中的重要性，使其成为地质学家和科学家不可或缺的工具。