greensand

Meanings

1. 1
   noun

   greenish sand or sandstone containing the mineral glauconite

   Fossils were recovered from a layer of upper greensand beneath the chalk.

A compound of green + sand, named for the olive-green colour imparted by grains of glauconite. British geology also uses Greensand in formation names such as the Lower Greensand and Upper Greensand.

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