| 释义 |
Plutonism Geol.|ˈpluːtənɪz(ə)m|
Also plutonism.
[f. as plutonic + -ism. So F. plutonisme.]
The Plutonic theory: see plutonic a. 1 a.
1847in Webster. 1910Encycl. Brit. XI. 644/2 Wernerianism..rapidly declined in influence, while Plutonism came steadily to the front, where it has ever since remained. 1966[see Neptunism].
2. Geological activity associated with the formation of plutonic rocks.
1942J. L. van Houten tr. Umbgrove's Pulse of Earth iv. 66 A local thickening of the sialic crust, resulting in the formation of a ‘root’ of sialic material... When this root's material begins to melt and invade the surface strata as batholithic intrusions, plutonism and volcanism cannot but be strongly acid (‘pacific’) in character. 1949Q. Jrnl. Geol. Soc. CV. 104 Plutonism does not appear to be a steady process advancing at a uniform rate, but rather one of energetic pulses interrupted by operations of diverse kinds, especially those of deformation. 1970Nature 24 Jan. 315/1 After the late Mesozoic plutonism, the next phase of igneous activity in western America began in the Oligocene. |