Stratotype Point Base of Chibanian

http://resource.geosciml.org/classifier/ics/ischart/BaseChibanianSP

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 https://stratigraphy.org/icschart/ChangeLog2012-2013-2014-2015-2016-2017-2018-2019-2020.txt
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)
type
StratigraphicPoint original
Resource original
Concept original
represents boundary
Base of Chibanian original
stratotype BaseChibanianSP original