clast

简明释义

英[klæst]美[klæst]

n. [地质] 碎屑（岩）

英英释义

单词用法

同义词

反义词

例句

1.To go to the first error, type: cfirst in ESC mode; to go to every subsequent error, use: cn; to go to the last error, type: clast.

在ESC模式下输入：cfirst跳到第一个错误；使用：cn跳到后续的错误；使用：clast跳到最后一个错误。

2.As with Dhofar 287, the stone appears to be a portion of a regolith breccia that contains a large clast of cumulate olivine gabbro and many small clasts.

佐法尔287，石头，似乎是一个部分壤角砾岩，其中包含大量碎屑堆积橄榄辉长岩和许多小碎屑。

3.As with Dhofar 287, the stone appears to be a portion of a regolith breccia that contains a large clast of cumulate olivine gabbro and many small clasts.

佐法尔287，石头，似乎是一个部分壤角砾岩，其中包含大量碎屑堆积橄榄辉长岩和许多小碎屑。

4.This course stresses those aspects of clast ic sedimentary petrology and sedimentology which have application to the petroleum geologist.

该课程着重对石油地质师有用的碎屑沉积岩石学和沉积学。

5.In clast IC sediments particle size is an important factor.

在碎屑沉积物中，颗粒大小是个重要因素。

6.In this area, the clasts are primarily composed of granite.

在这个地区，碎粒主要由花岗岩组成。

7.The presence of larger clasts can indicate a high-energy environment.

较大碎粒的存在可能表明高能量环境。

8.During the field study, we collected samples of different clasts from the riverbed.

在实地研究中，我们从河床收集了不同的碎粒样本。

9.The sedimentary rock was composed of various types of clasts.

这块沉积岩由各种类型的碎粒组成。

10.Geologists often analyze the size and shape of clasts to determine the environment of deposition.

地质学家常常分析碎粒的大小和形状，以确定沉积环境。

作文

In the study of geology, the term clast refers to a fragment of rock or mineral that has been broken off from a larger mass. Understanding the significance of clasts is crucial for geologists as they analyze sedimentary rocks and the processes that lead to their formation. These fragments can vary widely in size, shape, and composition, providing valuable information about the geological history of an area.When examining sedimentary rocks, geologists often categorize clasts based on their size. For instance, gravel-sized clasts are typically larger than sand-sized ones, which in turn are larger than silt-sized fragments. This classification helps in understanding the environment of deposition. Larger clasts may indicate a high-energy environment where strong currents can transport heavier materials, while smaller clasts suggest calmer conditions where finer particles settle more easily.The composition of clasts also plays a significant role in geological studies. Different types of clasts can reveal the source rock from which they originated. For example, quartz clasts are commonly found in many sedimentary environments due to the durability of quartz compared to other minerals. By analyzing the mineral content of clasts, geologists can infer the processes that led to their transportation and eventual deposition.Moreover, the study of clasts extends beyond just their physical characteristics. The way in which these fragments are arranged within a rock can provide insights into the geological history of the region. For example, a well-sorted sedimentary rock, where all the clasts are of similar size, indicates a consistent energy environment over time. In contrast, a poorly sorted rock with a wide range of clast sizes suggests a more chaotic environment where multiple processes were at play.In addition to their importance in sedimentology, clasts are also relevant in the field of paleontology. Fossils often become clasts themselves when they break down and are incorporated into sedimentary rocks. The study of these fossilized clasts can provide critical information about past life forms and their environments, contributing to our understanding of evolutionary processes.Furthermore, the analysis of clasts can aid in resource exploration. Many natural resources, such as coal, oil, and gas, are found within sedimentary rocks. By studying the characteristics of clasts, geologists can better understand the depositional environment and potential reservoirs for these resources. This knowledge is essential for effective resource management and environmental conservation.In conclusion, the term clast encompasses much more than just a simple fragment of rock. It is a key concept in geology that provides insights into the processes that shape our planet. From understanding sedimentary environments to exploring natural resources, clasts play a vital role in various geological studies. By recognizing the importance of clasts, we can appreciate the complex history of the Earth and the ongoing processes that continue to shape it today.

在地质学研究中，术语clast指的是从较大岩石或矿物中断裂下来的碎片。理解clast的重要性对于地质学家来说至关重要，因为他们分析沉积岩及其形成过程。这些碎片的大小、形状和成分差异很大，提供了有关区域地质历史的宝贵信息。在检查沉积岩时，地质学家通常根据clast的大小对其进行分类。例如，砾石大小的clast通常比沙子大小的更大，而沙子大小的又比淤泥大小的更大。这种分类有助于理解沉积环境。较大的clast可能表明高能环境，在这种环境中，强流可以运输更重的材料，而较小的clast则暗示着较平静的条件，在这些条件下，细小颗粒更容易沉降。clast的成分在地质研究中也起着重要作用。不同类型的clast可以揭示它们来源岩石的信息。例如，石英clast由于石英相较于其他矿物的耐久性，通常在许多沉积环境中被发现。通过分析clast的矿物成分，地质学家可以推测导致它们运输和最终沉积的过程。此外，clast的研究不仅限于其物理特征。这些碎片在岩石中的排列方式可以提供有关该地区地质历史的见解。例如，一种良好分选的沉积岩，其中所有clast的大小相似，表明随着时间的推移，能量环境保持一致。相反，具有宽范围clast大小的差分选岩石则表明存在更混乱的环境，多种过程同时发生。除了在沉积学中的重要性，clast在古生物学领域也相关。化石在分解后常常成为clast，并被纳入沉积岩中。对这些化石化的clast的研究可以提供关于过去生命形式及其环境的关键信息，促进我们对进化过程的理解。此外，clast的分析可以帮助资源勘探。许多自然资源，如煤、石油和天然气，都存在于沉积岩中。通过研究clast的特征，地质学家可以更好地了解沉积环境以及这些资源的潜在储层。这些知识对于有效的资源管理和环境保护至关重要。总之，术语clast不仅仅是简单的岩石碎片。它是地质学中的一个关键概念，提供了有关塑造我们星球的过程的见解。从理解沉积环境到探索自然资源，clast在各种地质研究中发挥着重要作用。通过认识到clast的重要性，我们可以欣赏地球复杂的历史以及继续塑造它的持续过程。