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Sandstone vs Greywacke - What's the difference?

sandstone | greywacke |

As nouns the difference between sandstone and greywacke

is that sandstone is a sedimentary rock produced by the consolidation and compaction of sand, cemented with clay etc while greywacke is a hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.

sandstone

English

(wikipedia sandstone)

Noun

  • A sedimentary rock produced by the consolidation and compaction of sand, cemented with clay etc.
    • (-)

    Derived terms

    * metasandstone

    greywacke

    English

    (wikipedia greywacke)

    Alternative forms

    * graywacke

    Noun

  • (geology) A hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.
  • *2004 , (Richard Fortey), The Earth , Folio Society 2011, p. 177:
  • *:Endless bleak, rounded hills composed of shales and ribs of tough ‘greywackes ’ make up the Southern Uplands – all of such rocks were originally deposited under marine conditions.

    • Derived terms

    * metagreywacke, metagraywacke