Volcanic eruption triggered the first extinction of species 500 million years ago

Technology News December 14 news, Australia's Curtin University scientists found that the discovery of ancient volcanic eruptions 510 million years ago significantly affected the climate, leading to the world's first species extinction.

According to reports from foreign media, the latest research from Curtin University in Australia shows that the ancient volcanic eruption in Australia during 510 million years ago markedly changed the climate at that time, leading to the first occurrence of a complex extinction in history.

Fred Jourdan, associate professor of applied geology at Curtin University, and colleagues published this study in the journal Geology. They used radiometric dating techniques to accurately estimate eruptions in the Kalkarindji volcanic area. During the time, the volcanic eruption released lava covering more than 2 million square kilometers in Western Australia and Northern Territory.

Dr. Jordan and colleagues confirmed that the early eruption time in the Kalkarindji volcanic area was from the early to the middle period of the Cambrian period, about 510 million years ago. This is the first time that the Earth has experienced a complex multicellular extinction.

Dr. Jordan said: "There is sufficient evidence that the extinction of this species caused the extinction of 50% of the species on the earth. The demise of these species is related to climate change and the depletion of oxygen in the ocean. However, scientists have not revealed what causes these changes. ."

Recent studies have shown that the early eruption of the Kalkarindji volcano was about 510 million years ago. At the same time, it was found that the Kalkarindji volcanic rock consumed sulfur dioxide, suggesting that sulfur was released into the atmosphere during volcanic eruptions.

The release of sulfur dioxide by the Pinatubo volcano eruption in 1991 caused the global average temperature to drop. It can thus be imagined that the Kalkarindji volcanic eruption that covered more than 2 million square kilometers of blasted lava around 510 million years ago will have a profound impact on the global climate.

Later, the research team compared the Kalkarindji volcano with other volcanic regions, showing that all the extinctions of all species in the earth are closely related to the volcanic eruption that releases sulfur dioxide to change the climate, and the volcanic eruption also releases greenhouse gases methane and carbon dioxide.

Dr. Jordan pointed out that the rapid changes in the climate caused by volcanic eruptions make it difficult for a variety of organisms to adapt and eventually lead to extinction. At the same time, he emphasized that this research will help us better understand the current climate environment. In order to better understand the long-term climate and biological effects of human activities released by the atmosphere in the atmosphere, we need to identify the global history of climate, oceans and ecology. How is the environment affected and changes made.

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