_:b670489849 . . _:b670472561 . . _:b670489849 . _:b670489850 . _:b670489850 . _:b670472561 . "glaciation"@en . _:b670489849 . _:b670472562 . _:b670472562 . "envoPolar" . _:b670472561 . "An interval of time within an ice age and during which temperatures fall resulting in planet-wide glacier advances." . _:b670472562 . "glacial period" . _:b670472562 . _:b670489849 . "glacial" . _:b670489849 . "glacierisation" . _:b670489850 . . _:b670489850 . _:b670472561 . "Note that there has been long debate over the usage of this term, leading to some of the ambiguity resolved across the various classes featuring 'glaciation' as a label or synonym in ENVO. For example, see https://www.cambridge.org/core/journals/journal-of-glaciology/article/glacierization/354F9D3447C4AE8159D984B235114DE6/core-reader" . "2019-05-30T21:15:07Z"^^ . _:b670489850 . . _:b670472561 . _:b670472562 .