argillite

/ahr-juh-lahyt/US // ˈɑr dʒəˌlaɪt //UK // (ˈɑːdʒɪˌlaɪt) //

精晶石,精髓岩,精晶岩,精髓石

Definitions

n.名词 noun

1
- : any compact sedimentary rock composed mainly of clay materials; clay stone.

The fact that argillite continued in use until the very last does not affect this conclusion.
On reaching the head of it, we found argillite in a vertical position.
Sandstone may be converted into quartzite, and shale into argillite, a compact, massive clay rock.
Near the upper end of the camp, Avalanche Creek has cut a deep, narrow gorge through brilliant red argillite.
Towering mountains close upon him upon both sides, that upon his right a celebrity in red argillite known as Rising Wolf.