Based on fossil evidence of when the Elves finally went the Gray Havens, I suppose.
It's a bit funny to partition, though, because the Holocene was super short, anyway. And I do use past tense, as I'm pretty sold on the Anthropocene concept. We have all sorts of new minerals like fordite a.k.a. Detroit Agate, trinitite, and corium. The changes in isotope ratios are already apparent in the ice cores. And not to mention the ongoing mass extinction.
It's a bit funny to partition, though, because the Holocene was super short, anyway. And I do use past tense, as I'm pretty sold on the Anthropocene concept. We have all sorts of new minerals like fordite a.k.a. Detroit Agate, trinitite, and corium. The changes in isotope ratios are already apparent in the ice cores. And not to mention the ongoing mass extinction.
"Kitto daijoubu da yo." - Sakura Kinomoto