pyroclastic

简明释义

英[ˌpaɪrəʊˈklæstɪk]美[ˌpaɪrəˈklæstɪk]

adj. 火山碎屑的，火成碎屑的

n. 火成碎屑物，火山碎屑物（常复数）

英英释义

单词用法

同义词

反义词

例句

1.Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石，岩类复杂。

2.Lava flows, pyroclastic flows, lahars and volcanic tsunamis are the major hazards that threaten the life and property of the people.

其中对人类生命财产构成严重威胁的火山灾害有熔岩流、火山碎屑流、火山泥流和火山海啸。

3.The gold mineralization is controlled by lower carboniferous volcanic and pyroclastic sedimentary rocks, regional faults and secondary structure.

论述下石炭统火山岩及火山碎屑沉积岩、区域性大断裂及次级构造对成矿的控制作用。

4.Rock types of volcanic reservoirs include mainly lava and pyroclastic rock.

火山岩储层岩石类型主要包括熔岩类、火山碎屑岩类。

5.Killing mechanism: ash, pyroclastic flows.

杀伤机制：火山灰、火山碎屑流。

6.On Heilongjiang basin volcanic rock mainly for basic, acidic lava, pyroclastic rocks, may divide 5 volcanic rock belts.

上黑龙江盆地火山岩主要为基性、中酸性的熔岩、火山碎屑岩，可划分5个火山岩带。

7.Many lives have been lost to the volcano's frequent eruptions, which are accompanied by high-speed pyroclastic flows and mudflows called lahars.

然而频繁的火山爆发，伴随着高速流动的火山碎屑流以及火山泥流，已经夺走了许多人的生命。

8.The volcanic rock series in the Rucheng basin in southeastern Hunan is composed of the basalt, diabase and basaltic pyroclastic rock.

湘东南汝城盆地火山岩系由辉绿岩、玄武岩和玄武质火山碎屑岩组成，属于低钾拉斑玄武岩系。

9.The pyroclastic rocks which transit to lava mainly have breccia lava and tuff lava etc.

向熔岩过渡的火山碎屑岩主要为角砾熔岩和凝灰熔岩等。

10.The town was buried under layers of pyroclastic 火山碎屑流 after the eruption.

在火山爆发后，小镇被层层火山碎屑流掩埋。

11.Scientists study pyroclastic 火山碎屑流 to better understand volcanic activity.

科学家研究火山碎屑流以更好地理解火山活动。

12.During the hike, we learned about the dangers of pyroclastic 火山碎屑流 in the area.

在徒步旅行中，我们了解了该地区火山碎屑流的危险。

13.The volcano erupted, sending a massive cloud of pyroclastic 火山碎屑流 into the sky.

火山爆发，向天空发送了大量的火山碎屑流。

14.The pyroclastic 火山碎屑流 can travel at speeds of up to 700 km/h.

火山碎屑流的速度可以达到每小时700公里。

作文

Volcanic eruptions are some of the most powerful natural phenomena on Earth, and they can produce a variety of materials that have significant impacts on the environment and human life. One of the most dangerous types of volcanic materials is known as pyroclastic (火山碎屑的) flows. These flows consist of a mixture of hot gas, ash, and volcanic rock fragments that can travel at incredible speeds down the slopes of a volcano. Understanding the nature and behavior of pyroclastic flows is crucial for both scientists and communities living in the vicinity of active volcanoes.The term pyroclastic originates from the Greek words 'pur' meaning fire and 'klastos' meaning broken. This aptly describes the composition of these flows, which are formed during explosive volcanic eruptions when magma is fragmented and ejected into the atmosphere. As this material falls back to the ground, it can accumulate and create a dense cloud of debris that can collapse under its own weight, leading to the formation of a pyroclastic flow.One of the most notable characteristics of pyroclastic flows is their speed. They can travel at velocities exceeding 700 kilometers per hour (about 435 miles per hour), making them one of the fastest geological processes on Earth. This rapid movement poses a significant threat to anyone in the path of an eruption. The extreme temperatures of pyroclastic flows can reach up to 1,000 degrees Celsius (1,832 degrees Fahrenheit), incinerating everything in their way. The combination of speed and heat makes these flows incredibly lethal, and they are responsible for many fatalities during volcanic eruptions throughout history.In addition to their destructive potential, pyroclastic flows also contribute to the geological landscape. Over time, the deposits left by these flows can solidify and form new rock formations, contributing to the growth of the volcanic structure itself. The study of pyroclastic deposits helps geologists understand the history of volcanic activity in a region and can provide insights into future eruptions.Moreover, the effects of pyroclastic flows extend beyond immediate destruction. They can lead to long-term environmental changes, such as altering local ecosystems and affecting air quality due to the release of ash and gases. Communities near volcanoes must be prepared for the possibility of pyroclastic flows through emergency planning and education. Evacuation routes and safety protocols are essential components of disaster preparedness for areas at risk of volcanic eruptions.In conclusion, the study of pyroclastic flows is vital for understanding volcanic hazards and mitigating risks associated with eruptions. By examining the behavior of these flows and their impact on the environment, scientists can better predict volcanic activity and help protect communities from potential disasters. As we continue to learn more about these fascinating yet dangerous geological phenomena, it becomes increasingly important to respect the power of nature and prepare for its unpredictable forces.

火山喷发是地球上最强大的自然现象之一，它们可以产生多种对环境和人类生活有重大影响的物质。其中一种最危险的火山物质被称为火山碎屑的流。这些流由热气体、灰烬和火山岩碎片的混合物组成，可以以惊人的速度沿着火山坡道移动。理解火山碎屑的流的性质和行为对于科学家和生活在活火山附近的社区至关重要。术语火山碎屑的源自希腊词“pur”，意为火，“klastos”，意为破碎。这恰当地描述了这些流的组成，它们是在爆炸性火山喷发过程中形成的，当时岩浆被分割并喷射到大气中。当这些物质重新落回地面时，它们可能会积累并形成一个致密的碎片云，这可能会因自身重量而坍塌，导致火山碎屑的流的形成。火山碎屑的流的一个显著特征是它们的速度。它们的速度可以超过每小时700公里（约每小时435英里），使其成为地球上最快的地质过程之一。这种快速运动对任何处于喷发路径上的人构成了重大威胁。火山碎屑的流的极端温度可以达到1000摄氏度（1832华氏度），瞬间烧毁它们所经过的一切。速度和热量的结合使这些流体极具致命性，并且在历史上负责许多火山喷发期间的死亡事件。除了其破坏潜力外，火山碎屑的流还会对地质景观产生影响。随着时间的推移，这些流留下的沉积物可以固化并形成新的岩石结构，促进火山本身的生长。对火山碎屑的沉积物的研究帮助地质学家了解一个地区火山活动的历史，并可以提供对未来喷发的见解。此外，火山碎屑的流的影响不仅限于即时的破坏。它们可能导致长期的环境变化，例如改变当地生态系统和由于释放灰烬和气体而影响空气质量。靠近火山的社区必须通过应急规划和教育为可能发生的火山碎屑的流做好准备。撤离路线和安全协议是处于火山喷发风险区域的灾害准备的重要组成部分。总之，研究火山碎屑的流对于理解火山危险和减轻与喷发相关的风险至关重要。通过研究这些流的行为及其对环境的影响，科学家可以更好地预测火山活动，并帮助保护社区免受潜在灾难。随着我们继续学习有关这些迷人但危险的地质现象的更多信息，尊重自然的力量并为其不可预测的力量做好准备变得越来越重要。