siltstone

[silt-stohn]

noun Petrography.

a very fine-grained sandstone, mainly consolidated silt.

Origin of siltstone

First recorded in 1925–30; silt + stone

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British Dictionary definitions for siltstone

siltstone

noun

a variety of fine sandstone formed from consolidated silt

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for siltstone

siltstone

[sĭlt′stōn′]

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.