Motion or solidification of magma; magmatic activity.
| 单词 | θ5116 |
| 释义 | the world > the earth > structure of the earth > formation of features > tectonization or diastrophism > [noun] > upwelling of magma (5) magmatism1952 Motion or solidification of magma; magmatic activity. sea-floor spreading1961 (the hypothesis of) the formation of fresh areas of oceanic crust, occurring through the upwelling of magma at mid-ocean ridges and its subsequent… pulse1964 Geology. A temporary upward movement of magma through the earth's crust; a body of magma intruded in this way. ocean-floor spreading1965 = sea-floor spreading n. at sea-floor, n. 2. plume1967 Geology. More fully mantle plume. A column of magma rising by convection from the lower mantle and spreading sideways on reaching the base of the… |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。