[Robert DeLong]

So now the question becomes, what caused olivine to disappear? Sounds like divine intervention to me.

[sparklite2]

So now the question becomes, what caused olivine to disappear?



Popeye finally had enough?

[JimSEA]

That’s where the oxygen went as olivine degrades quickly and there was little olivine brought to the surface when the crust was increasingly composed of granite. Oxygen was not taken out of the atmosphere in as great an amount as earlier. There is still plenty of olivine in the mantle.

[Repeal 16-17]

So now the question becomes, what caused olivine to disappear?

That was my first thought after reading the part about olivine.