The Siberian Traps form a large region of volcanic rock, known as a large igneous province, in Siberia, Russia. The massive eruptive event which formed the traps, one of the largest known volcanic events of the last 500 million years of Earth’s geological history, continued for a million years.
Vast volumes of basaltic lava paved over a large expanse of primeval Siberia in a flood basalt event. The original volume of lava is estimated to range from 1 million to 4 million km.
This massive eruptive event spanned the Permian-Triassic boundary, about 250 million years ago, and is cited as a possible cause of the Permian-Triassic extinction event. This extinction event, also called the Great Dying, affected all life on Earth, and is estimated to have killed 90% of species living at the time. Life on land took at least 30 million years to fully recover