aphyric texture

简明释义

无斑隐晶结构;

英英释义

例句

1.The volcanic rock we collected from the site exhibited an aphyric texture, indicating it cooled rapidly without forming crystals.

我们从现场收集的火山岩表现出一种无晶体纹理，表明它迅速冷却而没有形成晶体。

2.Many basalt samples show an aphyric texture, making them ideal for studying lava flow dynamics.

许多玄武岩样本显示出无晶体纹理，使它们成为研究熔岩流动动力学的理想对象。

3.When examining the thin section, we noted the aphyric texture which suggested a volcanic origin.

在检查薄片时，我们注意到无晶体纹理，这表明其火山起源。

4.In petrology, identifying an aphyric texture can help determine the cooling history of igneous rocks.

在岩石学中，识别无晶体纹理可以帮助确定火成岩的冷却历史。

5.The geologist explained that the aphyric texture in this granite indicates a high rate of magma ascent.

地质学家解释说，这种花岗岩中的无晶体纹理表明了岩浆上升速度很快。

作文

In the study of geology, understanding the various textures of igneous rocks is crucial for interpreting their formation and history. One such texture that geologists often encounter is the aphyric texture, which refers to a rock texture characterized by the absence of visible crystals in the groundmass. This means that when you look at a rock with an aphyric texture, you may not see any discernible mineral grains or crystals with the naked eye. Instead, the rock appears to be a homogeneous mass, typically formed from rapid cooling of magma or lava.The significance of aphyric texture lies in its implications for the formation conditions of the rock. Rocks that exhibit this texture usually originate from volcanic eruptions where the lava cools quickly upon reaching the surface. This rapid cooling prevents the formation of large crystals, resulting in the fine-grained appearance typical of aphyric texture. Such rocks are often associated with explosive volcanic activity, where the lava is ejected violently into the atmosphere. Understanding the aphyric texture can help geologists make inferences about the environment in which the rock was formed. For instance, if a rock sample is found to have an aphyric texture, it might suggest that the magma had a high gas content, leading to explosive eruptions. This contrasts with rocks that have a phaneritic texture, where larger crystals are present due to slower cooling rates beneath the Earth's surface. The comparison between these textures can reveal much about the geological processes at work.Moreover, the presence of aphyric texture can also influence the physical properties of the rock. For example, rocks with this texture tend to be less dense and more porous than their phaneritic counterparts. This porosity can affect how the rock interacts with water and other environmental factors, making it essential for hydrological studies and understanding erosion processes.In addition to its geological importance, the concept of aphyric texture can also extend into practical applications, such as in construction and landscaping. Understanding the properties of rocks with this texture can guide decisions on material selection for building projects. For instance, a rock with aphyric texture might be chosen for decorative purposes due to its unique appearance and lightweight characteristics.In conclusion, the aphyric texture is a vital concept in geology that provides insights into the formation and characteristics of igneous rocks. By studying this texture, geologists can uncover the history of volcanic activity and the environmental conditions present during the rock's formation. Furthermore, the implications of aphyric texture extend beyond academic study, influencing practical applications in construction and environmental management. As we continue to explore the complexities of our planet's geology, the understanding of textures like aphyric texture remains an essential component of our knowledge base.

在地质学的研究中，理解火成岩的各种纹理对于解释它们的形成和历史至关重要。其中一个地质学家经常遇到的纹理是无晶纹理，它指的是一种特征，在基质中没有可见的晶体。这意味着，当你观察一块具有无晶纹理的岩石时，肉眼可能看不到任何明显的矿物颗粒或晶体。相反，这块岩石看起来像是一个均匀的质量，通常是由岩浆或熔岩快速冷却形成的。无晶纹理的重要性在于它对岩石形成条件的启示。表现出这种纹理的岩石通常源于火山喷发，其中熔岩在到达地表后迅速冷却。这种快速冷却阻止了大晶体的形成，导致典型的细粒外观。这样的岩石通常与爆炸性的火山活动有关，熔岩被猛烈喷射到大气中。理解无晶纹理可以帮助地质学家推断岩石形成的环境。例如，如果发现一块岩石样本具有无晶纹理，这可能表明岩浆具有高气体含量，导致爆炸性喷发。这与具有显晶纹理的岩石形成对比，后者由于在地球表面以下较慢的冷却速度而存在较大的晶体。比较这些纹理可以揭示出许多关于地质过程的信息。此外，无晶纹理的存在也可能影响岩石的物理性质。例如，具有这种纹理的岩石往往比其显晶对应物更轻、更多孔。这种多孔性可能影响岩石与水和其他环境因素的相互作用，使其在水文学研究和理解侵蚀过程方面变得至关重要。除了其地质重要性之外，无晶纹理的概念还可以扩展到实际应用，例如在建筑和景观美化中。理解具有这种纹理的岩石的性质可以指导建筑项目材料选择的决策。例如，由于其独特的外观和轻质特性，可能会选择具有无晶纹理的岩石作为装饰材料。总之，无晶纹理是地质学中的一个重要概念，它提供了对火成岩形成和特征的深入了解。通过研究这种纹理，地质学家可以揭示火山活动的历史和岩石形成时的环境条件。此外，无晶纹理的意义超越了学术研究，影响着建筑和环境管理中的实际应用。随着我们继续探索地球地质的复杂性，对无晶纹理等纹理的理解仍然是我们知识体系的重要组成部分。