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单词 volcanicity
释义

volcanicity /ˌvɒlkə'nɪsɪtɪ//ˌvɑlkən'ɪsəti/

英汉-汉英词典
n. 火山性;火山现象;火山活动
词组 | 习惯用语
您要查找的是不是:
  • volcanic adj. 火山的;猛烈的;易突然发作的 n. 火山岩
  • volcanically adv. 火山似地;激烈地;猛烈地
  • volcanism n. 火山作用
  • catholicity n. 普遍性;宽容;大量
volcanicity n. [地质] 火山活动;[地质] 火山性;火山现象

网络短语:
polycyclic volcanicity 多旋回火山活动
英语例句库
  1. There are volcanicity and kinds of metalliferous minerals formed by rush of current on the Mars,which is superior to the metallic element spread in the terram on the Moon.
    火星上有火山活动和水流冲击形成的各种金属富矿,这比散布在土石中的月球金属元素优越得多。

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英语百科

Volcano

Cleveland Volcano in the Aleutian Islands of Alaska photographed from the International Space Station, May 2006
Ash plumes reached a height of 19 kilometres (12 mi) during the climactic explosive eruption at Mount Pinatubo, Philippines in 1991.
A 2007 eruptive column at Mount Etna producing volcanic ash, pumice and lava bombs
Ubinas Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates coming together. Volcanoes can also form where there is stretching and thinning of the crust's interior plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. This type of volcanism falls under the umbrella of "plate hypothesis" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called "hotspots", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Volcanoes are usually not created where two tectonic plates slide past one another.

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更新时间:2025/6/19 22:05:13