Final answer:
The Siberian Flood Basalts are associated with the Late Permian mass extinction, also known as the Great Dying, which was the most devastating of all mass extinctions. This extinction event was caused by the massive volcanic activity of the Siberian Flood Basalts, leading to global warming and ocean acidification. It marked the boundary between the Paleozoic and Mesozoic eras.
Step-by-step explanation:
The major geologic mass extinction associated with the Siberian Flood Basalts is the Late Permian mass extinction, also known as the Permian-Triassic extinction event or the Great Dying.
This extinction event occurred around 252 million years ago and was the most devastating of all mass extinctions. It is believed to have been caused by warming of the Earth's climate and changes in ocean chemistry due to the massive outpouring of basaltic lava in Siberia, known as the Siberian Flood Basalts.
During this extinction event, over 95% of marine species and 70% of terrestrial species went extinct. The volcanic eruptions injected large amounts of greenhouse gases into the atmosphere, leading to global warming and ocean acidification. These environmental changes had a catastrophic impact on life on Earth.
The mass extinctions caused by the Siberian Flood Basalts marked the boundary between the Paleozoic and Mesozoic eras in the geologic time scale.