Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of sandstone is as below...

Scolithus :: Scolithus (n.) A tubular structure found in Potsdam sandstone, and believed to be the fossil burrow of a marine worm..

Grain :: Grain (n.) The composite particles of any substance; that arrangement of the particles of any body which determines its comparative roughness or hardness; texture; as, marble, sugar, sandstone, etc., of fine grain..

Poecilitic :: Poecilitic (a.) Specifically: Of or pertaining to, or characterizing, Triassic and Permian sandstones of red and other colors..

Flag :: Flag (n.) Any hard, evenly stratified sandstone, which splits into layers suitable for flagstones..

Silex :: Silex (n.) Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See Silica, and Silicic..

Dinosauria :: Dinosauria (n. pl.) An order of extinct mesozoic reptiles, mostly of large size (whence the name). Notwithstanding their size, they present birdlike characters in the skeleton, esp. in the pelvis and hind limbs. Some walked on their three-toed hind feet, thus producing the large bird tracks, so-called, of mesozoic sandstones; others were five-toed and quadrupedal. See Illust. of Compsognathus, also Illustration of Dinosaur in Appendix..

Greensand :: Greensand (n.) A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime..

Fucoidal :: Fucoidal (a.) Containing impressions of fossil fucoids or seaweeds; as, fucoidal sandstone..

Sarsen :: Sarsen (n.) One of the large sandstone blocks scattered over the English chalk downs; -- called also sarsen stone, and Druid stone..

Otozoum :: Otozoum (n.) An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones..

Tilestone :: Tilestone (n.) A kind of laminated shale or sandstone belonging to some of the layers of the Upper Silurian.

Quartzite :: Quartzite (n.) Massive quartz occurring as a rock; a metamorphosed sandstone; -- called also quartz rock.

Clastic :: Clastic (a.) Fragmental; made up of brok/ fragments; as, sandstone is a clastic rock..

Graduate :: Graduate (v. i.) To pass by degrees; to change gradually; to shade off; as, sandstone which graduates into gneiss; carnelian sometimes graduates into quartz..

Psammite :: Psammite (n.) A species of micaceous sandstone.

Cephalaspis :: Cephalaspis (n.) A genus of fossil ganoid fishes found in the old red sandstone or Devonian formation. The head is large, and protected by a broad shield-shaped helmet prolonged behind into two lateral points..

Psarolite :: Psarolite (n.) A silicified stem of tree fern, found in abundance in the Triassic sandstone..

Potsdam Group :: Potsdam group () A subdivision of the Primordial or Cambrian period in American geology; -- so named from the sandstone of Potsdam, New York. See Chart of Geology..

Asterolepis :: Asterolepis (n.) A genus of fishes, some of which were eighteen or twenty feet long, found in a fossil state in the Old Red Sandstone..

Flysch :: Flysch (n.) A name given to the series of sandstones and schists overlying the true nummulitic formation in the Alps, and included in the Eocene Tertiary..

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