clay slate

countable uncountable

An argillaceous rock that splits readily into thin sheets.

Japanese Meaning

粘土質で、容易に薄い板状に割れる岩石

The geologist collected samples of clay slate from the riverbank.

地質学者は河岸から薄く裂けやすい粘土質の岩を採取した。

Sense（1）

An argillaceous rock that splits readily into thin sheets.

clay slates

（ plural ）