accretionary wedge

简明释义

1. 加积楔; 2. 增生楔; 3. 加积楔形伐;

英英释义

例句

1.The geologists studied the formation of the accretionary wedge in the subduction zone.

地质学家研究了俯冲带中增生楔的形成。

2.The accretionary wedge can provide valuable insights into past geological events.

该增生楔可以为过去的地质事件提供宝贵的见解。

3.Sediments accumulate over time to form an accretionary wedge at the edge of tectonic plates.

沉积物随着时间的推移在构造板块的边缘形成增生楔。

4.Researchers are investigating how the accretionary wedge affects local seismic activity.

研究人员正在调查增生楔如何影响当地的地震活动。

5.The presence of an accretionary wedge indicates ongoing tectonic processes.

一个增生楔的存在表明正在进行的构造过程。

作文

The concept of an accretionary wedge is crucial in understanding geological processes, particularly in the context of plate tectonics. An accretionary wedge refers to a mass of sediment and rock that accumulates at the convergent boundary of two tectonic plates, where one plate is being forced under another in a process known as subduction. This phenomenon not only shapes our planet's landscape but also plays a significant role in the formation of mountain ranges, ocean trenches, and various geological features. When two tectonic plates collide, the denser oceanic plate is often pushed beneath the lighter continental plate. As this occurs, sediments from the ocean floor and the continental margin are scraped off and accumulate in the region where the two plates meet. This accumulation forms the accretionary wedge, which can vary in size and composition depending on the materials involved and the dynamics of the tectonic activity. The study of accretionary wedges provides valuable insights into the history of tectonic movements and the geological evolution of regions affected by subduction. For instance, scientists can analyze the layers of sediment within an accretionary wedge to reconstruct past environments and understand the rates of sedimentation over geological time scales. This information is crucial for predicting future geological events, such as earthquakes and volcanic eruptions, which are often associated with subduction zones. In addition to their geological significance, accretionary wedges can also impact human activities. Regions near subduction zones are often prone to seismic activity, making them areas of concern for urban planning and disaster preparedness. Understanding the characteristics of an accretionary wedge can help engineers design safer buildings and infrastructure that can withstand potential earthquakes. Furthermore, the rich deposits found within these wedges can be sources of natural resources, including minerals and hydrocarbons, which are essential for various industries. Moreover, the ecological implications of accretionary wedges cannot be overlooked. The sediments that accumulate in these areas can create unique habitats for marine and terrestrial life. The interplay between geological processes and biological ecosystems highlights the importance of studying accretionary wedges not only from a geological perspective but also in terms of environmental conservation. In conclusion, the term accretionary wedge encapsulates a complex interplay of geological processes that significantly shape our planet. By studying these formations, we gain insights into the dynamic nature of Earth’s crust and its impact on both the environment and human society. Whether it is through understanding past geological events or preparing for future challenges, the study of accretionary wedges remains a vital area of research in geology and earth sciences. As we continue to explore the intricacies of our planet, the knowledge gained from accretionary wedges will undoubtedly contribute to a better understanding of Earth’s processes and the sustainability of our natural resources.

“增生楔”这一概念在理解地质过程，特别是板块构造方面至关重要。“增生楔”指的是在两个构造板块的汇聚边界处，沉积物和岩石的质量积累，在这个过程中，一个板块被迫置于另一个板块之下，这一现象称为俯冲。这种现象不仅塑造了我们星球的地貌，而且在山脉、海沟和各种地质特征的形成中也发挥着重要作用。当两个构造板块碰撞时，较密的海洋板块通常会被推到较轻的大陆板块之下。在此过程中，来自海底和大陆边缘的沉积物被刮除并在两个板块相遇的区域积累。这种积累形成了“增生楔”，其大小和成分取决于所涉及的材料和构造活动的动态。对“增生楔”的研究提供了对构造运动历史和受俯冲影响地区地质演化的宝贵见解。例如，科学家可以分析“增生楔”内部的沉积层，以重建过去的环境，并了解地质时间尺度上的沉积速率。这些信息对于预测未来的地质事件（如地震和火山喷发）至关重要，这些事件通常与俯冲带相关。除了地质意义外，“增生楔”也会影响人类活动。靠近俯冲带的地区往往容易发生地震，因此在城市规划和灾害预防方面需要关注。了解“增生楔”的特征可以帮助工程师设计更安全的建筑和基础设施，以抵御潜在的地震。此外，这些楔中发现的丰富沉积物可能是矿物和碳氢化合物等自然资源的来源，这对各行各业至关重要。此外，“增生楔”的生态影响也不容忽视。这些区域积累的沉积物可以为海洋和陆地生物创造独特的栖息地。地质过程与生物生态系统之间的相互作用突显了从地质角度以及环境保护的角度研究“增生楔”的重要性。总之，术语“增生楔”概括了显著塑造我们星球的地质过程之间复杂的相互作用。通过研究这些构造，我们获得了对地球地壳动态性质及其对环境和人类社会影响的深刻见解。无论是通过理解过去的地质事件还是为未来的挑战做好准备，对“增生楔”的研究仍然是地质学和地球科学的重要研究领域。随着我们继续探索我们星球的复杂性，从“增生楔”中获得的知识无疑将有助于更好地理解地球的过程和可持续利用我们的自然资源。