Substrata

Substrata, plural of substratum, may refer to:


 * Earth's substrata, the geologic layering of the Earth
 * Hypokeimenon, sometimes translated as substratum, a concept in metaphysics
 * Substrata (album), a 1997 ambient music album by Biosphere
 * Substrata 2, a 2001 double album by Biosphere, including a remaster of the 1997 album
 * Substrata (gardening), another term for subsoil
 * Substrata (geology), layers of rock or sediment
 * Substrata (linguistics), languages which influence another through linguistic contact