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Arkose vs Greywacke - What's the difference?

arkose | greywacke |

In geology|lang=en terms the difference between arkose and greywacke

is that arkose is (geology) a sedimentary rock consisting of small fragments of feldspar and quartz similar to a coarse sand while greywacke is (geology) a hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.

As nouns the difference between arkose and greywacke

is that arkose is (geology) a sedimentary rock consisting of small fragments of feldspar and quartz similar to a coarse sand while greywacke is (geology) a hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.

arkose

English

Noun

(wikipedia arkose)
  • (geology) A sedimentary rock consisting of small fragments of feldspar and quartz similar to a coarse sand.

    • Anagrams

    * * ----

    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