aleuritic texture

简明释义

粉砂结构;

英英释义

例句

1.During the mineral analysis, the team identified an aleuritic texture that suggested the presence of volcanic ash.

在矿物分析过程中，团队识别出一种淀粉质纹理，这表明存在火山灰。

2.In the study of soil composition, the aleuritic texture was found to enhance water retention capabilities.

在土壤成分研究中，发现淀粉质纹理有助于提高水分保持能力。

3.The artist preferred using clay with an aleuritic texture for its smooth finish and workability.

艺术家更喜欢使用具有淀粉质纹理的粘土，因为它光滑且易于加工。

4.The aleuritic texture of the rock provided clues about its formation process and environmental conditions.

岩石的淀粉质纹理提供了有关其形成过程和环境条件的线索。

5.The geologist noted the presence of aleuritic texture in the sedimentary rock sample, indicating a high degree of fine-grained material.

地质学家注意到沉积岩样本中存在淀粉质纹理，这表明细粒材料的高含量。

作文

In the world of geology and petrology, understanding the various textures of rocks is crucial for identifying their formation processes and characteristics. One such texture that often arises in sedimentary rocks is known as aleuritic texture. This term refers to a specific grain size and composition found within certain sedimentary deposits. To delve deeper into this concept, we must first explore what it entails and its significance in geological studies.The aleuritic texture is characterized by the presence of fine-grained particles, typically ranging between 0.002 mm and 0.062 mm in diameter. These particles are primarily composed of silt-sized grains, which are smaller than sand but larger than clay. The term 'aleurite' itself derives from the Greek word 'aleuron', meaning flour, highlighting the fine, powdery nature of these sediments. When observed under a microscope, rocks with aleuritic texture exhibit a mixture of quartz, feldspar, and other mineral fragments, which can provide valuable information about the environment of deposition.One significant aspect of aleuritic texture is its association with specific depositional environments. Typically, this texture is found in areas where water has played a dominant role in sediment transport, such as river deltas, floodplains, and shallow marine settings. The fine particles settle slowly in calm waters, allowing for the accumulation of these sediments over time. Understanding the presence of aleuritic texture in a rock sample can therefore reveal insights into the past conditions of the Earth’s surface and the processes that shaped it.Moreover, the study of aleuritic texture extends beyond just sedimentology; it also plays a role in paleontology and archaeology. For instance, when examining ancient sedimentary layers, geologists can identify fossilized remains that may be preserved within aleuritic texture deposits. This can help reconstruct past ecosystems and understand how life evolved in different geological periods. In archaeology, sediment analysis can provide clues about human activity and settlement patterns, as certain artifacts may be found embedded within these fine-grained layers.In addition to its scientific importance, aleuritic texture also has practical applications in industries such as construction and agriculture. The properties of soils with an aleuritic texture can influence water retention and drainage capabilities, impacting agricultural practices and land use planning. Understanding the texture and composition of soil can lead to better management strategies for crops and natural resources.In conclusion, the term aleuritic texture encompasses a vital aspect of sedimentary rock classification and analysis. By studying the fine-grained particles that define this texture, geologists and scientists can unlock a wealth of information about the Earth’s history, environmental changes, and even human civilization. Whether it is through the lens of geology, paleontology, or practical land use, the implications of aleuritic texture are far-reaching and significant. As we continue to explore and understand our planet, the study of such textures will remain an essential component of geological science and its applications.

在地质学和岩石学的世界中，理解岩石的各种纹理对于识别其形成过程和特征至关重要。一个常常出现在沉积岩中的纹理被称为淀粉质纹理。这个术语指的是某些沉积物中存在的特定粒度和成分。为了更深入地探讨这一概念，我们必须首先了解它的含义及其在地质研究中的重要性。淀粉质纹理的特征是细粒颗粒的存在，通常直径介于0.002毫米和0.062毫米之间。这些颗粒主要由粉砂颗粒组成，粉砂颗粒比沙子小，但比粘土大。“淀粉质”一词本身源于希腊语“aleuron”，意为面粉，突显了这些沉积物细腻、粉状的特性。当在显微镜下观察时，具有淀粉质纹理的岩石展现出石英、长石和其他矿物碎片的混合，这可以提供有关沉积环境的重要信息。淀粉质纹理的一个显著方面是它与特定沉积环境的关联。通常，这种纹理出现在水对沉积物运输起主导作用的区域，例如河口、洪泛平原和浅海环境。细小的颗粒在平静的水域中缓慢沉降，使这些沉积物随着时间的推移而积累。因此，了解岩石样本中淀粉质纹理的存在可以揭示地球表面的过去条件以及塑造它的过程。此外，淀粉质纹理的研究不仅限于沉积学；它在古生物学和考古学中也起着作用。例如，在检查古代沉积层时，地质学家可以识别可能保存在淀粉质纹理沉积物中的化石遗骸。这有助于重建过去的生态系统，并理解生命在不同地质时期如何演变。在考古学中，沉积物分析可以提供关于人类活动和定居模式的线索，因为某些文物可能嵌入在这些细粒层中。除了科学的重要性，淀粉质纹理在建筑和农业等行业也有实际应用。具有淀粉质纹理的土壤的性质可以影响水分保持和排水能力，从而影响农业实践和土地使用规划。了解土壤的纹理和成分可以带来更好的作物管理策略和自然资源管理。总之，术语淀粉质纹理涵盖了沉积岩分类和分析的一个重要方面。通过研究定义这种纹理的细颗粒，地质学家和科学家可以解锁有关地球历史、环境变化甚至人类文明的大量信息。无论是通过地质学、古生物学还是实际土地使用的视角，淀粉质纹理的影响都是深远而重要的。随着我们继续探索和理解我们的星球，对这种纹理的研究将始终是地质科学及其应用的核心组成部分。