Definition

A type of rock formation that occurs when molten rock pushes between layers of sedimentary rock, causing the layers above to bulge upwards.

Example

The laccolith created a noticeable dome in the landscape, altering the surrounding geology.

Conversation

Have you ever heard of a laccolith?

No, I haven't. What is it?

It's a type of rock formation that can lift the layers above it.

That sounds interesting! I love learning about geology.

Synonyms & Antonyms

Root Explanation

Laccolith → It is formed from "lac" (from Latin *lacus*, meaning lake) and "lith" (from Greek *lithos*, meaning stone). The word describes a geological formation that resembles a lake of stone, specifically a dome-shaped mass of igneous rock that has intruded between layers of sedimentary rock.

Memory Tip

Imagine a 'lake' ('lac') of 'stone' ('lith') — that's why a laccolith is a dome-shaped rock formation that looks like a stone lake.

Visually Confused Words