extrusive dome

简明释义

喷出穹丘;

英英释义

例句

1.Visitors can hike to the top of the extrusive dome to witness the stunning views, which geologists call a 喷出穹丘.

游客可以徒步到达这个extrusive dome的顶部，欣赏壮观的景色，地质学家称之为喷出穹丘。

2.The volcanic activity led to the formation of an extrusive dome, which is known as an 喷出穹丘 in geology.

火山活动导致形成了一个extrusive dome，在地质学中称为喷出穹丘。

3.The extrusive dome formed rapidly due to the high viscosity of the lava, making it a classic example of a 喷出穹丘.

由于熔岩的高粘度，这个extrusive dome迅速形成，成为典型的喷出穹丘例子。

4.Scientists studied the extrusive dome to understand the flow of lava during the eruption, referred to as 喷出穹丘。

科学家们研究了这个extrusive dome以了解喷发期间熔岩的流动，称之为喷出穹丘。

5.The study of the extrusive dome provides insights into past volcanic activity and its impact on the landscape, or 喷出穹丘。

对这个extrusive dome的研究提供了对过去火山活动及其对地貌影响的见解，即喷出穹丘。

作文

The study of geology allows us to understand the various processes that shape our planet. One fascinating feature that geologists often explore is the extrusive dome. An extrusive dome (外喷穹) is formed when magma erupts from a volcano and spreads out over a large area, creating a dome-like structure on the surface. This phenomenon can be observed in several volcanic regions around the world, where the landscape is dramatically altered by volcanic activity.The formation of an extrusive dome typically begins with the accumulation of magma beneath the Earth's crust. When the pressure builds up sufficiently, the magma finds a way to escape through cracks and fissures, resulting in a volcanic eruption. Unlike explosive eruptions that shoot ash and gas high into the atmosphere, extrusive domes are characterized by relatively gentle lava flows that spread outwards. This type of eruption is often associated with low-viscosity basaltic lava, which can travel great distances before solidifying.One of the most well-known examples of an extrusive dome is the Mount St. Helens in Washington State, USA. While it is famous for its catastrophic eruption in 1980, the volcano has also produced numerous extrusive domes over the years. These domes are usually formed by the slow accumulation of lava that oozes out of the volcano and creates a steep-sided structure. The resulting landscape is often a dramatic contrast to the surrounding terrain, showcasing the power of geological forces at work.The study of extrusive domes is not only significant for understanding volcanic activity but also for assessing potential hazards associated with such formations. As these domes grow, they can become unstable, leading to landslides or collapse. This poses a risk to nearby communities and ecosystems. Therefore, monitoring extrusive domes is crucial for volcanic hazard assessment and disaster preparedness.In addition to their geological significance, extrusive domes also contribute to our understanding of the history of volcanic activity in a region. By studying the layers of lava and ash that accumulate over time, scientists can reconstruct past eruptions and gain insights into the behavior of a volcano. This information is invaluable for predicting future eruptions and mitigating risks associated with volcanic activity.In conclusion, the extrusive dome (外喷穹) is a remarkable geological feature that illustrates the dynamic processes of our planet. Through the study of these formations, we can gain a deeper appreciation for the forces that shape our environment and the importance of volcanic monitoring for public safety. Understanding extrusive domes not only enhances our knowledge of geology but also highlights the intricate relationship between humans and the natural world.