white lias

noun

1. a type of rock composed of pale-coloured limestones and marls See also Lias

Example Sentences

This limestone occurs in irregular masses near the base of the White Lias, or uppermost division of the Rhaetic series.

From Project Gutenberg

They resemble in their aspect the yellowish white lias of Bath, but their geological place is much higher than the lias.

From Project Gutenberg