archean eon
ar
ˈɑ:
aa
chean
kiən
kiēn
eon
i:ɒn
ion
Archean Aeon

Definición y significado de "Archean Eon"en inglés

Archean Eon
01

(geology) the eon of geological time extending from about 3.8 billion to 2.5 billion years ago, when Earth's crust formed and the earliest known life developed 

especializado
información gramatical
Ejemplos
Earth's crust became more stable during the Archean Eon. 
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