Permian Mass Extinction
Geologic and fossil evidence of the Permian event known as End-P (The end of the Permian period).
Peter Ward - University of Washington
The Day the Earth Nearly Died Part I – BBC
The Day the Earth Nearly Died Part II – BBC
The Day the Earth Nearly Died Part III – BBC
The Day the Earth Nearly Died Part IV – BBC
The Day the Earth Nearly Died Part V – BBC
Since CO2 could only account for about 5 degress C of temperature increase.
Further examination of the geologic record revealed a large amount of 12C
Three distinct extinction events were seen in the paleo record. The first event began close to the eruption event and went on for about 40,000 years. At about 40-45k years there was a sharp extinction event in the ocean of nearly everything in the ocean. The third event went on to about 80k years after the eruption event began.
Analysis of the rock showed that after the marine extinction, but before the final death of everything on the land, there was an increase in Carbon 12. This is not normally produced by rotting plants or animal matter. It is however found in methane hydrates stored in what are known as clathrate traps.
The leading theory is that when the temperature reached about 4-5 degrees C of temperature increase, the methane released from the ocean.