| 释义 |
Intrusive rocks
| (Geol.) | rocks which have been forced, while in a plastic or melted state, into the cavities or between the cracks or layers of other rocks. The term is sometimes used as equivalent to plutonic rocks. It is then contrasted with effusive or volcanic rocks. |
See also: Intrusive Intrusive Rocks
Intrusive Rocks plutonic rocks, igneous rocks formed as a result of magma solidification deep in the rock mass of the earth’s crust. Intrusive rocks are contrasted with effusive rocks, which are rocks formed from the magma that flowed out and hardened on the surface of the earth as the lava of volcanoes. |