back island arc

简明释义

后岛弧;

英英释义

例句

1.Many islands in the Pacific are part of a back island arc 后岛弧 system.

太平洋中的许多岛屿是后岛弧 back island arc 系统的一部分。

2.The geological survey revealed that the back island arc 后岛弧 is rich in volcanic activity.

地质调查显示，后岛弧 back island arc 富含火山活动。

3.The back island arc 后岛弧 plays a crucial role in the region's seismic activity.

后岛弧 back island arc 在该地区的地震活动中起着至关重要的作用。

4.The study of the back island arc 后岛弧 has implications for understanding volcanic eruptions.

对后岛弧 back island arc 的研究对理解火山喷发有重要意义。

5.Researchers are studying the formation of the back island arc 后岛弧 to better understand tectonic movements.

研究人员正在研究后岛弧 back island arc 的形成，以更好地理解构造运动。

作文

The geological features of our planet are fascinating and complex, with many terms that describe the various formations and processes that shape the Earth. One such term is back island arc, which refers to a specific type of volcanic island chain that forms behind a volcanic arc. To understand this concept, we must first explore what a volcanic arc is. A volcanic arc typically forms at convergent plate boundaries, where an oceanic plate subducts beneath a continental plate or another oceanic plate. This process leads to the melting of the subducted plate, resulting in volcanic activity that creates a series of islands known as a volcanic arc. The islands often have a characteristic curved shape due to the dynamics of plate tectonics.Now, when we talk about the back island arc, we are referring to the secondary volcanic islands that emerge on the opposite side of the main volcanic arc. These islands form as a result of the complex interactions between tectonic plates and the magma generated from the subduction process. The back island arc is typically located on the continental side of the initial volcanic arc, making it an essential feature in understanding the geological evolution of certain regions.The formation of a back island arc can be attributed to several factors, including the angle of subduction, the composition of the oceanic crust, and the presence of hot spots or mantle plumes. As the oceanic plate descends into the mantle, it can create a zone of melting that not only fuels the primary volcanic arc but also contributes to the development of the back island arc. This phenomenon highlights the intricate relationship between plate tectonics and volcanic activity.Geologically, the study of back island arcs provides valuable insights into the processes that shape our planet. For instance, researchers can analyze the composition of rocks and minerals found in these areas to understand the history of volcanic activity and the movement of tectonic plates over millions of years. Additionally, the presence of a back island arc can indicate specific geological hazards, such as the potential for earthquakes and tsunamis, which are critical considerations for communities living in these regions.In conclusion, the term back island arc is significant within the field of geology, as it represents a unique aspect of volcanic island formation related to tectonic processes. By studying these features, scientists can gain a better understanding of the Earth's dynamic systems and the natural hazards that may arise from them. As we continue to explore our planet's geological wonders, the back island arc serves as a reminder of the powerful forces at work beneath our feet, shaping the landscapes we inhabit and influencing the natural world around us.

我们星球的地质特征是迷人而复杂的，许多术语描述了塑造地球的各种地貌和过程。其中一个术语是后岛弧，它指的是在火山弧后面形成的一种特定类型的火山岛链。要理解这一概念，我们首先需要探讨什么是火山弧。火山弧通常在汇聚板块边界处形成，在那里，一个海洋板块向下俯冲到一个大陆板块或另一个海洋板块之下。这个过程导致了被俯冲板块的熔化，从而引发火山活动，形成一系列被称为火山弧的岛屿。这些岛屿通常具有特征性的弯曲形状，这是由于板块构造的动态作用。现在，当我们谈论后岛弧时，我们指的是在主火山弧的另一侧出现的次级火山岛。这些岛屿的形成是由于板块之间复杂的相互作用以及由俯冲过程产生的岩浆。后岛弧通常位于初始火山弧的大陆侧，使其成为理解某些地区地质演化的重要特征。后岛弧的形成可以归因于多个因素，包括俯冲角度、海洋地壳的组成以及热点或地幔柱的存在。当海洋板块沉入地幔时，它可以创造一个熔融区，不仅为主要火山弧提供燃料，还促进了后岛弧的发展。这一现象突显了板块构造与火山活动之间错综复杂的关系。从地质学的角度来看，研究后岛弧为我们提供了对塑造地球过程的宝贵见解。例如，研究人员可以分析这些地区发现的岩石和矿物的组成，以了解数百万年来火山活动的历史和板块运动。此外，后岛弧的存在可以指示特定的地质危害，如地震和海啸的潜在风险，这对于生活在这些地区的社区来说是至关重要的考虑因素。总之，术语后岛弧在地质学领域中具有重要意义，因为它代表了与构造过程相关的火山岛形成的独特方面。通过研究这些特征，科学家可以更好地理解地球的动态系统以及可能由此产生的自然灾害。随着我们继续探索我们星球的地质奇观，后岛弧提醒我们脚下潜藏的强大力量，塑造着我们居住的景观并影响着我们周围的自然世界。