greywackes

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A form of greywacke — A hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.

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Meanings

noun
  1. pluralplural of greywacke
Cite this entry
APA

greywackes. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/greywackes

MLA

“greywackes.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/greywackes. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “greywackes,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/greywackes.

Source: greywackes on Wiktionary, CC BY-SA 4.0.