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Can Large Scale Volcanism Explain the Heat-Death of Venus (and Venus-like worlds?)

One of the fundamental questions about Venus is whether it ever had a habitable period in its distant past. If it did have such a period how did Venus get from a temperate state to its present day hot-house? Recent studies have demonstrated that increasing solar luminosity through time is an unlikely pathway for Venus even if that is one way for Earth to end up in a runaway greenhouse state. Large Igneous Provinces (LIPs; like that of the Siberian Traps) have been responsible for the End Permian mass extinction and other dramatic climate change events throughout Earth’s history. We investigate the hypothesis that overlapping Large Igneous Provinces could have driven Venus from a temperate to a runaway greenhouse state. We look at the LIP record in Earth history and the probability for overlapping LIP events as a proxy.

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