Siberian Traps
Coordinates: 67°N 90°E / 67°N 90°E
The Siberian Traps (Russian: Сибирские траппы, Sibirskiye trappy) 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 and spanned the Permian–Triassic boundary, about 251 to 250 million years ago.
The term "traps" is derived from the Swedish word for stairs (trappa, or sometimes trapp), referring to the step-like hills forming the landscape of the region, which is typical of flood basalts.
Vast volumes of basaltic lava covered a large expanse of Siberia in a flood basalt event. Today the area covered is about 2 million square kilometres (770,000 square miles)—roughly equal to western Europe in land area—and estimates of the original coverage are as high as 7 million square kilometres (2,700,000 sq mi). The original volume of lava is estimated to range from 1 to 4 million cubic kilometres (240,000–960,000 cu mi).
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