Not all magma erupts as lava.
Some of it cools and solidifies beneath the Earth’s surface, creating different types of igneous intrusions.
🪨 Sill – Forms parallel to existing rock layers.
🪨 Dike – Cuts across rock layers, usually vertically.
🪨 Laccolith – Lifts the overlying rocks into a dome shape.
🪨 Batholith – The largest intrusive body, formed deep underground over millions of years.
Each intrusion records a different pathway that magma took beneath the Earth’s crust—long before erosion revealed it at the surface.
Which one did you learn about for the first time today?
@madan_film
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July 10, 2026 858 3
