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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

/ sĭltstōn′ /

  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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Example Sentences

Many are preserved in the siltstones and sandstones that formed at the bottom of the lake.

The fossils were found close together, in three levels within an area of reddish-brown siltstone that appears to have been a shared breeding ground, Ramezani says.

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siltSilures