Definition

A type of dark gray rock that is made up of sand and small pieces of other rocks, often used in construction.

Example

The builders chose graywacke for the foundation because of its strength and durability.

Conversation

Have you ever heard of graywacke?

Yeah, isn't it that dark gray sandstone?

Exactly! It's interesting how it contains fragments of other materials.

I find it fascinating how different rocks tell stories about the Earth's history.

Synonyms & Antonyms

Root Explanation

Graywacke is derived from the German word 'Grauwacke', where 'grau' means gray and 'wacke' refers to a type of sandstone. The term describes a specific kind of gray sandstone that is often composed of a mixture of rock fragments and clay.

Memory Tip

Think of the German word 'grau' for gray, and 'wacke' for a type of sandstone — this helps you remember that graywacke is a gray-colored sandstone.

Visually Confused Words