greywacke

listen to the pronunciation of greywacke
English - Turkish
grovak
(Jeoloji) Gri kumtaşı
English - English
a sedimentary rock composed of silt or sand particles which have been hardened and cemented
A sandstone containing more than 15% clay between the constituent clasts
{i} (Geology) coarse-grained wacke of dark grey color
A type of sedimentary rock
greywacke
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