Tiny animal carcasses found in buried Antarctic lake

Post by yesenadam » Sat, Jan 19, 2019, 1:04 AM UTC

thaumasiotes wrote: post #17

JackFr wrote: post #7

Earlier quoted context omitted.

I think you have it backwards -- carbon works by some organic material not interacting with the atmosphere. Atmospheric CO2 has a relatively constant proportion of carbon-14. Once it stops interacting with the atmosphere it begins to decay and have a different proportion than atmospheric carbon.

I don't understand this response. The model of the GP comment appears to be that: - The atmosphere has a certain level of carbon-14, and living things stay at the atmospheric level by virtue of the various processes by which they interact with the atmosphere. - When they stop living, they also stop exchanging carbon with the atmosphere, and their carbon-14 levels change due to radioactive decay over time. - But here,…