Permian-Triassic mass extinction. Consequences on Earth's system
Wow, I just finished watching this it seems we know, or can guess, quite a bit about the level of Carbon, particularly Methane that were released at the end of the Permian and what they did to the climate. What seems to be missing is any consensus about why the Permian extinction stopped just that once things settled down climate and atmosphere swung back to about where they'd been beforehand. Inference to best-guess? It was rain and rocks that did most of it, with the biosphere in such a mess and so much new surface rock in Siberia the main mechanism to remove Carbon from the atmosphere would be chemical weathering; the rain dissolves Methane and Carbon Dioxide forming complex acidic solutions that react with the fresh rock, this forms insoluble Carbonates which lock carbon in the ground.