ashy grit

ashy grit

[′ash·ē ′grit]
(geology)
Pyroclastic material of sand and smaller size.
Mixture of ordinary sand and volcanic ash.
References in periodicals archive ?
In Ojai, popular inns and restaurants were busy fielding questions from weekend vacationers about the fire as residents coped with sore throats, ashy grit on their cars and anxiety as the flames crept closer.