The inclusion of igneous rock in older rocks, or the development or localization of an ore body in older rocks. The latter is referred to as ore deposition
{i} act of putting into a place; location or platform for a gun or weapons battery (Military)
The placement and positioning of waste packages in the repository emplacement drifts
1 the process of intrusion of igneous rocks 2 The localization of ore minerals by any process such as ore deposition
A putting in, or assigning to, a definite place; localization; as, the emplacement of a structure
Emplacements are specially prepared positions from which a heavy gun can be fired. There are gun emplacements every five-hundred yards along the road. a place where a large gun is put and fired