the hadean eon got its name from hades.
the hadean eon got its name from hades.
how did the hadean eon get its name?
hades
the jack hills zircon led to something of a revolution in our understanding of the hadean eon. older references generally show that hadean earth had a molten surface with prominent volcanos. the name "hadean" itself refers to the "hellish" conditions assumed on earth for the time, from the greek hades. zircon dating suggested, albeit controversially, that the hadean surface was solid, temperate, and covered by acidic oceans. this picture derives from the presence of particular isotopic ratios that suggest the action of water-based chemistry at some time before the formation of the oldest rocks (see cool early earth).
late heavy bombardment
it is alternately set to be the earliest era within the hadean eon, or its own eon preceding the hadean. when first proposed, it was conceived of as a pre-hadean eon which ended with a hypothetical collision of the proto-earth, leading to the formation of the moon. later scholarship defined it as the first era of the hadean eon. , it is being considered as a proposed revision of the precambrian time scale.









































section::::origins.
chaotian (geology)