An assise (from the Fr., derived from Latin assidere, `to sit beside`), is a geological term for two or more beds or strata of rock united by the occurrence of the same characteristic species or genera. ... Found on http://en.wikipedia.org/wiki/Assise
An assise (from the Fr., derived from Latin assidere, `to sit beside`), is a geological term for two or more beds or strata of rock united by the occurrence of the same characteristic species or genera. ...