Hadeyaan

Akhrin dheeraad ah: Hadean

Hadeyaanku waa jiyooloojiyada ka hor Arkeyaan. Waxay ka bilaabatay samaynta dhulku qiyaastii 4.6 bilyan sano ka hor, waxayna dhammaatay 4 bilyan oo sano ka hor. Magaca "Hadeyaan" wuxuu ka yimid Hades, Giriiga "gunta dhulka", sababtoo ah xaaladaha dhulka wakhtigaas. Juquraafiga Preston Cloud wuxuu markii ugu horeysay adeegsaday ereyga 1972. Duqeymaha Meteyoriit, foolkaanooyin iyo heerkulka sare ayaa aad ugu baahay dhulka hore.

	Hadeyaan Hephaestean (paleo) Jacobian (paleo) Canadian (meso) Procrustean (meso) Acastan (neo) Promethean (neo)

Hadeyaan → Arkeyaan → Broterosoyig → Fanerosoyig