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Siltstone vs Argillite - What's the difference?

siltstone | argillite |

As nouns the difference between siltstone and argillite

is that siltstone is a sedimentary rock whose composition is intermediate in grain size between the coarser sandstone and the finer mudstone while argillite is a fine-grained sedimentary rock, intermediate between shale and slate, sometimes used as a building material.

siltstone

English

Noun

(wikipedia siltstone) (siltstones)
  • A sedimentary rock whose composition is intermediate in grain size between the coarser sandstone and the finer mudstone.

    • argillite

    English

    Noun

    (wikipedia argillite) (en noun)
  • (geology) A fine-grained sedimentary rock, intermediate between shale and slate, sometimes used as a building material