New Danish study contradicts a popular theory of the mass extinctions that occurred in the transition between the geological periods, Triassic and Jurassic.
For 201 million years ago super-continent Pangea began to break up. Around this time, life on Earth suffered a severe crisis that wiped out countless species. On land, it was not so bad, although many plants hung with leaves, faded and withered away, writes Videnskab.dk.
Carbon dioxide and methane into the atmosphere
This disaster has so far been explained by the disruption of Pangea triggered a massive volcanism, which released both carbon dioxide and methane into the atmosphere, ie. greenhouse gases that made the climate warmer and possibly led to metanis at the bottom of the oceans melted. Both processes may have released raw amounts of the greenhouse gas methane, which got global warming to escalate. Many scientists believe that animals and plants had no major problems with the eruptions and their direct emissions of carbon dioxide - the assumption has been that it was the greenhouse effect of methane emissions from the seabed, which took a stranglehold on their lives.
The theory is weakened now, after a Danish research group at the research center GEUS has brought new convincing results to the market.
In an article in the respected international scientific journal Geology proves GEUS-scientists that the Earth was hit by mass extinction some time before the presumed release of methane.
"The great mass extinction occurs according to our studies between the two peaks in the atmospheric content of methane and carbon dioxide and not simultaneously with the peak number two as previously thought," points out Sofie Lindström to Videnskab.dk. As a senior scientist at Stratigraphic Section at GEUS, she is project manager for the study.IOW: THE GEOLOGICAL RECORD CONTINUES TO PROVE THAT THREALARMISTS ARE WRONG AND THAT AGW IS TFBS.