basic volcanic rock

简明释义

基性火山岩;

英英释义

例句

1.The geologist explained that basic volcanic rock 基性火山岩 is formed from low-viscosity lava.

地质学家解释说，基性火山岩 基性火山岩 是由低黏度熔岩形成的。

2.In the field, we collected samples of basic volcanic rock 基性火山岩 for further analysis.

在野外，我们收集了样本以便进一步分析基性火山岩 基性火山岩。

3.The researchers discovered that basic volcanic rock 基性火山岩 can host valuable mineral deposits.

研究人员发现基性火山岩 基性火山岩 可以储藏有价值的矿物沉积。

4.Many islands are composed primarily of basic volcanic rock 基性火山岩 due to their volcanic origins.

许多岛屿主要由基性火山岩 基性火山岩 组成，因其火山起源。

5.The presence of basic volcanic rock 基性火山岩 indicates a more fluid eruption in the past.

存在基性火山岩 基性火山岩 表明过去的喷发更加流动。

作文

Volcanic rocks are fascinating geological formations that provide insights into the Earth's internal processes. Among these, basic volcanic rock (基础火山岩) holds a significant place due to its unique characteristics and formation processes. Basic volcanic rocks are primarily composed of minerals such as olivine, pyroxene, and plagioclase, which contribute to their darker color and lower viscosity compared to other types of volcanic rocks. This composition is crucial in understanding the nature of volcanic eruptions and the type of lava that is produced.The term 'basic' refers to the silica content of the rock. Basic volcanic rocks typically have a low silica content, usually less than 52%. This low silica level results in a higher proportion of iron and magnesium, giving these rocks their characteristic dark color. The most common examples of basic volcanic rock (基础火山岩) include basalt and basaltic andesite, both of which are prevalent in various volcanic regions around the world.Basalt, for instance, is one of the most abundant types of volcanic rock found on Earth. It forms from the rapid cooling of lava that is low in silica and rich in iron and magnesium. This rapid cooling can occur when lava flows into the ocean or when it erupts explosively. The resulting rock is dense and has a fine-grained texture, which makes it distinct from other volcanic rocks like rhyolite, which is high in silica and lighter in color.The formation of basic volcanic rock (基础火山岩) is often associated with divergent tectonic plate boundaries and hotspots. At divergent boundaries, tectonic plates move apart, allowing magma to rise and fill the gap. This process results in the formation of new oceanic crust, primarily composed of basalt. Similarly, hotspots, which are areas of intense volcanic activity within tectonic plates, can also produce large quantities of basic volcanic rock. The Hawaiian Islands, for example, are primarily made up of basalt formed by hotspot volcanism.Understanding basic volcanic rock (基础火山岩) is essential not only for geologists but also for environmental scientists and engineers. These rocks play a vital role in soil formation and nutrient cycling, which are crucial for sustaining ecosystems. Additionally, basalt has been studied for its potential use in carbon capture and storage technologies, as it can react with carbon dioxide to form stable minerals, thereby reducing greenhouse gas levels in the atmosphere.In conclusion, basic volcanic rock (基础火山岩) is a key component of our planet's geology, providing valuable information about volcanic activity and the Earth's formation. Its unique properties and formation processes make it an important subject of study for various scientific fields. As we continue to explore and understand these rocks, we gain deeper insights into the dynamic processes that shape our planet and influence its environment.