claystone

/ ˈkleɪˌstəʊn /

noun

1. a compact very fine-grained rock consisting of consolidated clay particles

claystone

/ klā′stōn′ /

1. A fine-grained, dark gray to pink sedimentary rock consisting primarily of compacted and hardened clay. Claystone is similar to shale but without laminations.

Example Sentences

Employing cutting-edge techniques like Rock Eval Pyrolysis, they deciphered the organic richness of different types of rock, including shale, claystone, sandstone, and siltstone.

From Science Daily

"The limestone, sandstone, claystone and gypsum layers that formed the ocean bed were folded and crumpled to create the Anti-Atlas Mountains," the space agency said in a statement that accompanied the image.

From Fox News

The bottom part of the cliff — the part that fell — is a compressed, compacted sand and claystone material that’s millions of years old.

From Los Angeles Times

When the felspar assumed the appearance of a slaty claystone, which it did towards the base of the mountains on the banks of the river, we observed no copper in it.

From Project Gutenberg

Well, next I turned my attention to the sea-bed, which I was extremely pleased to see was of soft, slimy claystone.

From Project Gutenberg