Definitions

1. noun

a fine-grained sedimentary rock composed of compacted clay and silt particles, often with a low content of calcium carbonate and silica.

“The geologist examined the layers of mudstone in the exposed rock face.”

2. noun

a type of rock that is formed from mud or clay.

“The archaeologist discovered a layer of mudstone beneath the ancient city.”

3. verb

to form or become mudstone, often as a result of geological processes.

“The landscape has been mudstoned over time, creating a new landscape feature.”