The largest extinction event in the history of Quest suspected the volcano is

 LONDON, Jan. 23 (Xinhua) About 2.5 million years ago happened in the history of the earth one of the biggest extinction event. Been suspected in the Siberian region of volcanic eruption was a A new study has found new evidence for this.

is suspected before the volcanic eruptions in Siberia led to mass extinctions, primarily because the two are very close in time, but the lack of specific evidence. Some people have raised speculation that include volcanic eruptions may then release a lot of carbon dioxide and other greenhouse gases, caused by climate change; volcanic eruption of some substances may also result in the atmosphere ozone hole, making the UV reaching the ground is enhanced.

study, when the volcano is the release of toxic ash, scattered to large areas of ocean, causing a large number of dead marine life, making the final collapse of the biosphere overwhelmed.

participate in the study 
than that, this is the first real evidence that the volcanic eruption was also associated with coal combustion, volcanoes in Siberia for the identified cause mass extinction is a evidence.

Earth's history there had been several large-scale extinction events. Studies have shown that in about 2.5 billion years ago that mass extinctions in the Earth more than 96% of marine species extinction, land vertebrates there are more than 70% of extinction, is the largest in the history of a mass extinction event .

new issue of British The researchers analyzed that it was in the crust of Siberia in the rising magma encountered large areas of coal, the mixture of oxygen in the air after the encounter caused by combustion. Ash carried by the wind, a considerable part of the deposition to the Canadian Arctic.

the largest extinction event in the history of Quest and new progress