Igneous+Intrusions

﻿ Igneous Intrusions

﻿ Pluton - any igneous rock which hardens underground.

Sill - an igneous intrusion that cuts between rock layers.

Dike - an igneous intrusion that cuts across rock layers.

Laccolith - a mushroom-shaped igneous intrusion.

Batholith - an igneous intrusion of unknown size and depth.

Stock - a small batholith less than 100 square kilometers.

Volcanic Neck - The remenents of the hardened lava in the throat of a volcano after an erosion.



