allochthonous block

简明释义

1. 外来断块; 2. 异地岩块;

英英释义

例句

1.The presence of an allochthonous block suggests significant geological activity in the area.

一个外来岩块的存在表明该地区经历了显著的地质活动。

2.The allochthonous block was found to contain fossils that are not native to the region.

发现这个外来岩块中含有不属于该地区的化石。

3.During the excavation, they discovered an allochthonous block that had been transported from a distant location.

在挖掘过程中，他们发现了一个外来岩块，它是从遥远的地方运输过来的。

4.Researchers are studying the allochthonous block to understand its origin and how it affects local ecosystems.

研究人员正在研究这个外来岩块以了解其起源以及它如何影响当地生态系统。

5.The geologist identified an allochthonous block in the sedimentary layers, indicating a complex tectonic history.

地质学家在沉积层中识别出一个外来岩块，这表明了复杂的构造历史。

作文

In the field of geology, understanding the various types of rock formations is crucial for interpreting the Earth's history and the processes that have shaped its surface. One term that often arises in this context is allochthonous block, which refers to a geological formation that has originated from a different location than where it is currently found. This concept is significant because it helps geologists trace the movement of tectonic plates and the forces of erosion and sedimentation that have influenced the landscape over millions of years.The term allochthonous block comes from the Greek words 'allo', meaning 'other', and 'chthon', meaning 'earth'. Therefore, an allochthonous block can be understood as a piece of the Earth that has been displaced from its original position. Typically, these blocks are transported by geological processes such as faulting, folding, or glacial activity. For instance, during the last Ice Age, massive glaciers moved across continents, carrying rocks and debris from one location to another. When these glaciers melted, they deposited the allochthonous blocks in areas far removed from their source.The identification of allochthonous blocks is essential for reconstructing past environments and understanding the geological history of an area. By studying the composition and characteristics of these blocks, geologists can infer the conditions under which they were formed and the processes that led to their displacement. This information is invaluable for a range of applications, from natural resource exploration to assessing geological hazards.For example, in regions where tectonic activity is prevalent, such as along plate boundaries, allochthonous blocks can indicate past seismic events. The presence of certain types of rocks within these blocks may suggest that they were once part of a subducted plate or a volcanic island arc. Thus, analyzing allochthonous blocks provides insights into the dynamic nature of the Earth’s crust and the interactions between different geological units.Moreover, allochthonous blocks also play a role in the biodiversity of an area. When these blocks are composed of unique rock types, they can create distinct microhabitats that support specialized flora and fauna. This ecological aspect highlights the interconnectedness of geological processes and biological diversity, emphasizing the importance of preserving both natural landscapes and their geological features.In summary, the term allochthonous block encapsulates a critical concept in geology, representing fragments of the Earth that have been relocated from their original sites. Understanding these formations not only aids in piecing together the planet's geological narrative but also sheds light on the intricate relationship between geology and ecology. As we continue to study the Earth, the significance of allochthonous blocks will undoubtedly remain a focal point for researchers seeking to unravel the complexities of our planet's past and present.

在地质学领域，理解各种岩石形成类型对于解释地球历史和塑造其表面的过程至关重要。一个常常出现的术语是外来块体，它指的是一种地质形成物，起源于与其当前所在位置不同的地方。这个概念很重要，因为它帮助地质学家追踪构造板块的运动以及侵蚀和沉积作用对景观的影响，这些过程已经持续了数百万年。外来块体这个术语来源于希腊词“allo”，意为“其他”，以及“chthon”，意为“地球”。因此，外来块体可以理解为一块已从其原始位置被移位的地球部分。通常，这些块体是通过断层、褶皱或冰川活动等地质过程转移的。例如，在上一个冰河时代，大规模的冰川横扫大陆，带走了来自一个地方的岩石和碎屑。当这些冰川融化时，它们将外来块体沉积在远离其来源的地区。识别外来块体对于重建过去环境和理解一个地区的地质历史至关重要。通过研究这些块体的组成和特征，地质学家可以推断出它们形成的条件以及导致其移位的过程。这些信息在自然资源勘探到评估地质灾害等多个应用中都是无价的。例如，在构造活动频繁的地区，如板块边界，外来块体可能表明过去的地震事件。这些块体中某些类型岩石的存在可能暗示它们曾经是一个被俯冲的板块或火山岛弧的一部分。因此，分析外来块体提供了对地球地壳动态性质及不同地质单元之间相互作用的见解。此外，外来块体在一个地区的生物多样性中也起着重要作用。当这些块体由独特的岩石类型组成时，它们可以创造出支持特定植物和动物的独特微生境。这一生态方面突显了地质过程与生物多样性之间的相互联系，强调了保护自然景观及其地质特征的重要性。总之，术语外来块体概括了地质学中的一个关键概念，代表了已从其原始地点重新定位的地球碎片。理解这些形成物不仅有助于拼凑出地球的地质叙事，还揭示了地质与生态之间错综复杂的关系。随着我们继续研究地球，外来块体的重要性无疑将继续成为研究人员寻求揭示我们星球过去和现在复杂性的重点。