mafic

简明释义

英[ˈmæfɪk]美[ˈmæfɪk]

adj. 铁镁质的

英英释义

单词用法

同义词

反义词

例句

1.In general, acid plagioclase twin dense and flat, while the mafic twin is thin and not straight.

一般情况下，酸性斜长石双晶纹密集且平直，而基性斜长石的双晶纹较稀且不够平直。

2.The mafic due to sodium zoisitization, its alteration products often with green color;

基性斜长石由于遭受钠黝帘石化，其蚀变产物常带绿色色调；

3.The studying degree of the predecessor is low to the Permian mafic-ultramafic rock.

前人对该地区二叠纪镁铁质—超镁铁质岩石的研究程度较低。

4.The traditional platinoid mineral resources are referred to as the platinoid mineral resources associated with the mineralization of mafic magmas.

传统型铂族矿产，系指与镁铁质岩浆成矿作用有关的铂族矿产资源。

5.Other types such as those associated with mafic-ultramafic rocks and in the contact between granites and dolomitic marbles or enclaves and roof pendants in granites are less significant.

其他类型的滑石，如与镁铁质-超镁铁质岩共生的、在花岗岩与白云质大理岩接触带的、在花岗岩体中呈包体或顶垂体状的、则相对不重要。

6.Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.

黑云母一般是镁铁质及超镁铁质岩石中的次要成分。

7.Assimilation of the crustal materials by the mafic magma from the crust is a necessary condition of obtaining s and forming sulfide ores.

镁铁质岩浆同化地壳是获取硫得以产出硫化物矿石的必要条件。

8.As to the activity of the components, the mafic component is more active than the felsic component.

在组分活性方面，镁铁质组分比长英质组分的活动更为明显。

9.In geology, mafic 镁铁质的 rocks are typically darker in color and have higher densities than felsic rocks.

在地质学中，mafic镁铁质的岩石通常颜色较深，密度高于长英质岩石。

10.The presence of mafic 镁铁质的 minerals like olivine and pyroxene can help identify the type of volcanic eruption.

像橄榄石和辉石这样的mafic镁铁质的矿物的存在可以帮助识别火山喷发的类型。

11.Scientists often study mafic 镁铁质的 rocks to understand the Earth's mantle composition.

科学家们常常研究mafic镁铁质的岩石以了解地球地幔的成分。

12.The volcanic rock sample we collected was primarily composed of mafic 镁铁质的 minerals, indicating its formation from a deep magma source.

我们收集的火山岩样本主要由mafic镁铁质的矿物组成，表明它是来自深层岩浆源形成的。

13.The mafic 镁铁质的 nature of basalt makes it an important rock in oceanic crust studies.

玄武岩的mafic镁铁质的特性使其在海洋地壳研究中非常重要。

作文

In the study of geology, understanding the composition of rocks is essential for deciphering the history of our planet. One important term that frequently arises in this field is mafic. The word mafic refers to igneous rocks that are rich in magnesium and iron. These rocks typically have a dark color and are denser than their felsic counterparts, which are rich in silica and lighter in color. The term itself is derived from the combination of the words 'magnesium' and 'ferric', highlighting the key components that define these types of rocks.The significance of mafic rocks cannot be overstated. They play a crucial role in the formation of the Earth's crust and are often found in oceanic crust as well as in volcanic islands. For instance, basalt, a common mafic rock, is formed from the rapid cooling of lava that is low in silica content. This rapid cooling results in a fine-grained texture, which is characteristic of many mafic rocks.One of the most fascinating aspects of mafic rocks is their contribution to volcanic activity. When mafic magma erupts, it tends to flow more easily than felsic magma due to its lower viscosity. This allows for the formation of broad, shield-shaped volcanoes, such as those found in Hawaii. The eruptions of mafic volcanoes are generally less explosive compared to those of felsic volcanoes, making them a subject of interest for volcanologists who seek to predict volcanic behavior.Furthermore, the presence of mafic rocks can provide valuable insights into the tectonic processes that shape our planet. For example, the Mid-Atlantic Ridge, a divergent boundary between tectonic plates, is primarily composed of mafic rocks. As the plates pull apart, mafic magma rises to fill the gap, creating new oceanic crust. This process not only contributes to the growth of the ocean floor but also plays a vital role in the recycling of materials within the Earth's mantle.In addition to their geological importance, mafic rocks also have practical applications. They are often used as construction materials due to their durability and strength. Basalt, for instance, is commonly used in road construction and as an aggregate in concrete. The unique properties of mafic rocks make them valuable resources in various industries, including construction and landscaping.In conclusion, the term mafic encapsulates a significant category of igneous rocks that are rich in magnesium and iron. Their dark coloration, density, and role in volcanic activity make them a subject of great interest in geology. By studying mafic rocks, scientists can gain insights into the processes that shape our planet, from the formation of new crust at divergent boundaries to the behavior of volcanoes. Additionally, the practical uses of mafic materials in construction highlight their importance beyond the realm of geology. Understanding mafic rocks is essential for anyone interested in the dynamic nature of the Earth and its geological processes.

在地质学研究中，理解岩石的组成对于解读我们星球的历史至关重要。这个领域中经常出现的一个重要术语是mafic。mafic一词指的是富含镁和铁的火成岩。这些岩石通常呈深色，并且比其富含二氧化硅的对应物轻质岩更为致密。这个术语本身源于“镁”和“铁”的组合，强调了定义这些岩石的关键成分。mafic岩石的重要性不容小觑。它们在地壳形成中发挥着关键作用，通常可以在海洋地壳以及火山岛上找到。例如，玄武岩是一种常见的mafic岩石，是由低二氧化硅含量的熔岩迅速冷却形成的。这种快速冷却导致了细粒结构，这是许多mafic岩石的特征。mafic岩石最迷人的方面之一是它们对火山活动的贡献。当mafic岩浆喷发时，由于其粘度较低，它往往比富含二氧化硅的岩浆流动更为容易。这使得形成广阔的盾形火山成为可能，例如夏威夷的火山。mafic火山的喷发通常比felsic火山的喷发少爆炸性，这使其成为火山学家研究火山行为的兴趣所在。此外，mafic岩石的存在可以提供有关塑造我们星球的构造过程的宝贵见解。例如，中大西洋脊，一个板块之间的发散边界，主要由mafic岩石组成。当板块分开时，mafic岩浆上升以填补间隙，创造新的海洋地壳。这个过程不仅有助于海底的生长，还在地球地幔内材料的循环中发挥着重要作用。除了它们的地质重要性，mafic岩石还有实际应用。由于其耐用性和强度，它们通常被用作建筑材料。例如，玄武岩通常用于道路建设和混凝土中的骨料。mafic岩石的独特性质使它们在建筑和园艺等各个行业中成为宝贵资源。总之，mafic一词概括了一类富含镁和铁的火成岩。它们的深色、致密性以及在火山活动中的作用使其成为地质学中极具兴趣的研究对象。通过研究mafic岩石，科学家可以深入了解塑造我们星球的过程，从发散边界的新地壳形成到火山行为。此外，mafic材料在建筑中的实用用途突显了它们在地质学之外的重要性。理解mafic岩石对于任何对地球的动态特性及其地质过程感兴趣的人来说都是必不可少的。