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claystone

claystone

8.7
A hard rock made of tiny bits of clay pressed together
  • noun
  • /ˈkleɪstoʊn/
  • Specialized
translation icon : arcillita
  • Layers of claystone indicate ancient environments with slow-moving water.

Examples

  • The geologist collected samples of claystone to analyze their mineral composition.

  • In some regions, claystone forms steep cliffs due to its compact nature.

  • Look at this beautiful piece of claystone!

  • The claystone was used to make pottery.

  • In some regions, claystone forms steep cliffs due to its compact nature.

  • Layers of claystone indicate ancient environments with slow-moving water.

  • The geologist collected samples of claystone to analyze their mineral composition.

Synonyms

rock
vsclaystone
1.0

Hard natural stone that you find on the ground or underground

is the specific fine-grained clay-derived variety rather than any mineral mass
stone
vsclaystone
976 1.0

A hard natural rock used for building or a small piece of it

is the specifically compacted clay material rather than general mineral pieces
sedimentary rock
vsclaystone
  • Specialized
3 3.5

Rock made from layers of sand, mud, or broken shells

is the clay-rich specific kind rather than any sedimentary group
mudstone
vsclaystone
  • Specialized
1 5.5

A hard rock that forms when mud or clay presses together and becomes solid

is specifically formed from compacted clay rather than general mud
argillaceous rock
vsclaystone
  • Specialized
9.8

A rock made mainly of clay that forms in layers

is a compacted clay rock rather than a broad clay-rich category
argillite
vsclaystone
  • Specialized
9.9

A hard rock made from clay that does not split into thin sheets

is the form produced by simple compaction without required hardening

How Consolidated

shale
  • Specialized
57 5.7
claystone
  • Specialized
8.7
sedimentary clay
  • Specialized
5.6
clay
171 1.0
sediment
  • Specialized
43 4.2

Surface Forms

claystone singular
claystones plural

Morphology

claystone = clay + stone (transparent) = clay + stone

The word is a straightforward compound 'clay' + 'stone' meaning a rock composed mainly of clay.

Etymology

Claystone is a simple compound of clay and stone. 'Clay' means 'soft earth used for pots' and 'stone' means 'rock', so claystone is rock formed when clay is pressed hard and becomes stone.