Magnetostratigraphic polarity-transition zon, английский (polarity-transition zone). a substantial interval in a succession of rock strata (of the order of 1 m in thickness) in which the magnetic polarity is reversed gradually (see section 8.b.6).
Magnetostratigraphic polarity zon, английский (polarity zone). the basic formal unit of magnetostratigraphic polarity classification. polarity zones may be subdivided into polarity subzones and grouped into polarity superzones (see section 8.c).
