What context can I use each word in?
Learn when and how to use these words with these examples!
shale
Example
The shale formation in this area contains a lot of natural gas. [shale: noun]
Example
The shale layer split easily when we were drilling. [shale: adjective]
mudstone
Example
The mudstone layer contained many well-preserved fossils. [mudstone: noun]
Example
The mudstone formation was deposited in a shallow marine environment. [mudstone: adjective]
Good things to know
Which word is more common?
Shale is more commonly used than mudstone in everyday language, especially in the context of oil and gas production. Mudstone is more commonly used in academic and scientific contexts.
What’s the difference in the tone of formality between shale and mudstone?
Both shale and mudstone are relatively formal terms, as they are primarily used in scientific and technical contexts. However, shale may be slightly more common in informal contexts due to its association with energy production and fracking controversies.
