sedimentary rock

/ˈsɛdəˌmɛntəri rɑk/

Other forms: sedimentary rocks

Definitions of sedimentary rock

1. noun

   rock formed from consolidated clay sediments
   types:

   argillite

   a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages

   arenaceous rock

   a sedimentary rock composed of sand

   argillaceous rock

   a sedimentary rock formed from clay deposits

   rudaceous rock

   a sedimentary rock formed of coarse-grained material

   slate

   a fine-grained metamorphic rock that can be split into thin layers

   limestone

   a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

   shale

   a sedimentary rock formed by the deposition of successive layers of clay

   breccia

   a rudaceous rock consisting of sharp fragments embedded in clay or sand

   rottenstone, tripoli

   a weathered and decomposed siliceous limestone; in powdered form it is used in polishing

   sandstone

   a sedimentary rock made of tiny rock pieces held together by natural cement

   humic shale

   shale that is rich in humic acids

   oil shale

   shale from which oil can be obtained by heating

   type of:

   rock, stone

   material consisting of the aggregate of minerals like those making up the Earth's crust