Intrusioihin
Intrusioihin is a term used in Finnish geology to describe magmatic intrusions—bodies of igneous rock that crystallize from magma that has forced its way into preexisting rock near or below the Earth's surface. The word appears in technical texts to refer to multiple intrusion events or bodies and is used when discussing the collective occurrence of intrusions in a region.
In geological classification, intrusions are grouped by geometry and size. Dikes are tabular bodies that cut
Formation and textures arise from cooling histories. Magma that cools slowly at depth tends to form coarse-grained
Significance in geology lies in revealing tectonic and magmatic evolution, crustal composition, and thermal histories of