Stratotype Point Base of Chibanian

ratified GSSP true
boundary level GSSP is 1 m below base Brunhes Chron in type section; base Brunhes Chron at 773 ka provided the numeric age in prior chart versions
change note
comment Chiba, Japan
correlation event Byk-E tephra; 1.1 m below directional midpoint of Brunhes–Matuyama magnetic reversal (base of Chron 1n)
status ratified by IUGS (15-01-2020)
StratigraphicPoint original
Resource original
Concept original
represents boundary
Base of Chibanian original
stratotype BaseChibanianSP original