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siltstone

[ silt-stohn ]

noun

, Petrography.
  1. a very fine-grained sandstone, mainly consolidated silt.

siltstone

/ ˈsɪltˌstəʊn /

noun

  1. a variety of fine sandstone formed from consolidated silt

siltstone

/ sĭlt′stōn′ /

  1. A fine-grained sedimentary rock consisting primarily of compacted and hardened silt. Siltstones are similar to shale but without laminations. They vary in color from black or gray to brown or red.

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Word History and Origins

Origin of siltstone1

First recorded in 1925–30; silt + stone

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