Table 3.

Age estimates for early lunar and terrestrial differentiation events.

observation	age (Ma)	references
Moon
oldest concordant FAN ages	4360–4470	[14,18]
peak in lunar zircon age distribution	4320	[69]
oldest point on lunar zircon	4417	[70]
zircon Hf model ages	4380–4480	[71]
mare basalt 146Sm-142Nd source age	4320–4420	[31,32,52,68]
Pb model age for lunar highlands	4420	[72]
KREEP Sm-Nd and Lu-Hf model ages	4360–4440	[34,35,64]
182Hf-182W lunar model age	<4500 Ma	[73]
Earth
Hf-W age of core formation	4450–4540	[74,75,76]
U-Pb age of the Earth	∼4450	[77,78]
I-Pu-Xe age of the Earth's atmosphere	∼4450	[79,80,81]
146Sm-142Nd model age for Isua	4350–4470	[82,83]
peak in oldest Hadean zircons	4350	[84]
146Sm-142Nd age for Nuvvuagittuq crust	4340–4400	[85]