I was watch Cosmos last night and they got onto the subject of the Great Dying. The show went on to lay out a fairly tight timeline and causality for the event.
They began with a brief mention of the Siberian Traps, the traditional smoking gun for the event.
Then suggested the Trap eruptions baked off huge amounts of coal that had formed in the region.
The increase in carbon caused warming that triggered deep ocean melt of methane.
This lead to huge amounts of hydrogen sulphide being released into the atmosphere by green sulfur bacteria.
So how much of this is reasonable conjecture, and how much is confirmed science. The coal bake off seems to me to be very speculative, and not even needed to get the carbon levels up to what has been observed. But I have been known to be wrong before, is there some recent cutting edge paper that has thrown this idea up?
They began with a brief mention of the Siberian Traps, the traditional smoking gun for the event.
Then suggested the Trap eruptions baked off huge amounts of coal that had formed in the region.
The increase in carbon caused warming that triggered deep ocean melt of methane.
This lead to huge amounts of hydrogen sulphide being released into the atmosphere by green sulfur bacteria.
So how much of this is reasonable conjecture, and how much is confirmed science. The coal bake off seems to me to be very speculative, and not even needed to get the carbon levels up to what has been observed. But I have been known to be wrong before, is there some recent cutting edge paper that has thrown this idea up?
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