numeric position 0.774 equal to or less than 0.774equal to or more than 0.774
change note 2020/01 - Quaternary: numeric age Base Chibanian Stage changed to 774 ka (in accordance with GSSP documentation; GSSP is 1 m below base Brunhes Chron in type section; base Brunhes
Resource original
Concept original
TimePosition original
has TRS Millions of years ago original