Oldest thing found carbon dating
Things like the Pafuri baobab, a South African tree that is likely at least 2,000 years old — and requires an armed guard escort to visit.
Or the stromatolites of Western Australia, organisms connected to the oxygenation of the planet that began some 3.5 billion years ago.
When a creature dies, it ceases to consume more radiocarbon while the C-14 already in its body continues to decay back into nitrogen.
“I try to approach them as portraits,” she says of her images.
Before we get into the details of how radiometric dating methods are used, we need to review some preliminary concepts from chemistry.