golos_dobra (golos_dobra) wrote,

BBC Horizon Ep 7 The Day the Earth Melted (India & the Deccan Traps)


Magmatism was suggested as a cause of the Late Devonian extinction in 2002. The end of the Devonian Period was a time of extremely widespread trap magmatism and rifting in the Russian and Siberian platforms, which were situated above the hot mantle plumes and suggested as a cause of the Frasnian / Famennian and end-Devonian extinctions. The Viluy and Pripyat-Dniepr-Donets large igneous provinces were suggested to correlate with the Frasnian / Famennian extinction and the Kola and Timan-Pechora magmatism was suggested to correspond to the end Devonian-Carboniferous extinction.

Most recently, scientists have confirmed a correlation between Viluy traps (in the Vilyuysk region) on the Siberian Craton and the Kellwasser extinction by Ar/Ar dating.


The giant Norilsk-Talnakh nickel–copper–palladium deposit formed within the magma conduits in the most complete part of the Siberian Traps. It has been linked to the Permian–Triassic extinction event, which occurred approximately 251.4 million years ago


The Deccan Traps began forming 66.25 million years ago, at the end of the Cretaceous period. The bulk of the volcanic eruption occurred at the Western Ghats some 66 million years ago. This series of eruptions may have lasted less than 30,000 years in total

There is some evidence to link the Deccan Traps eruption to the asteroid impact which created the Chicxulub crater in the Mexican state of Yucatán. Although the Deccan Traps began erupting well before the impact, argon-argon dating suggests that the impact may have caused an increase in permeability that allowed magma to reach the surface and produced the most voluminous flows, accounting for around 70% of the volume.[19] The combination of the asteroid impact and the resulting increase in eruptive volume may have been responsible for the mass extinctions that occurred at the time that separates the Cretaceous and Paleogene periods, known as the K–Pg boundary.


a sixth mass extinction event is ongoing:
6. Holocene extinction: Currently ongoing.
Tags: governing equation

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