GRAYWACKE


Meaning of GRAYWACKE in English

noun Etymology: partial translation of German Grauwacke Date: 1811 a coarse usually dark gray sandstone or fine-grained conglomerate composed of firmly cemented fragments (as of quartz or feldspar)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.