低平火山口 Maar




低平火山口(德语:Maar)是由岩浆和水相互作用发生爆炸而形成。在地表下形成了深切到围岩的圆形火山口,并被一个低矮的碎屑环包围。常常会积水而形成火山湖。其语源为拉丁文的mare,即「海」。
网站首页 情感咨询 情感美文 情感百科 情感生活 学习充电 旧版美文
词汇 | Maar lake |
分类 | 英语词汇 英语翻译词典 |
释义 |
Maar lake
中文百科
低平火山口 Maar(重定向自Maar lake)
![]() ![]() ![]() ![]() 低平火山口(德语:Maar)是由岩浆和水相互作用发生爆炸而形成。在地表下形成了深切到围岩的圆形火山口,并被一个低矮的碎屑环包围。常常会积水而形成火山湖。其语源为拉丁文的mare,即「海」。
英语百科
Maar 低平火山口(重定向自Maar lake)
![]() ![]() ![]() ![]() A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma). A maar characteristically fills with water to form a relatively shallow crater lake which may also be called a maar. The name comes from the local Moselle Franconian dialect of Daun in the Rhineland-Palatinate, Germany, where it derives from Latin mare (sea). Maars are shallow, flat-floored craters that scientists interpret as having formed above diatremes as a result of a violent expansion of magmatic gas or steam; deep erosion of a maar presumably would expose a diatreme. Maars range in size from 60 to 8,000 m (200 to 26,250 ft) across and from 10 to 200 m (33 to 656 ft) deep; most maars commonly fill with water to form natural lakes. Most maars have low rims composed of a mixture of loose fragments of volcanic rocks and rocks torn from the walls of the diatreme. |
随便看 |
|
依恋情感网英汉例句词典收录3870147条英语例句词条,基本涵盖了全部常用英语单词的释义及例句,是英语学习的有利工具。