Huge and widespread volcanic eruptions triggered the end-Triassic extinction
There are 1 comment on the Science, Industry and Business story from Mar 25, 2013, titled Huge and widespread volcanic eruptions triggered the end-Triassic extinction. In it, Science, Industry and Business reports that:
Some 200 million years ago, an increase in atmospheric CO2 caused acidification of the oceans and global warming that killed off 76 percent of marine and terrestrial species on Earth.
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“Geologist [I'm Climate Change]”
Since: Mar 07
#1 Mar 27, 2013
This paper explained a lot more than just the end Triassic extinction event.
The size of the Camp province indicates that it was as big as the Ontong Java province (now only 1/3 of which remains visible, and the rest subducted), and the Siberian traps responsible for the end Permian heat death mass extinction.
The reason why it was not as effective @ extermination was because the end Permian siberian traps erupted with the Earth locked into climate mode#2 (the Jason model), whereas due to continental movement (N) the End Triassic Camp province erupted in climate mode#3 (the Dino climate model) which is more efficient @ cooling the planet (about 2 deg c cooler per given level of CO2).
The other interesting bit is that it explains the reason for the rifting of the Variscan mountains forming at the close of the Carboniferous and emergent @ the beginning of the Permian.
A lot of coal swamps & deltas formed on the E. margin of the N.American continent @ end carboniferous, and the end result would be a LOT of carbonaceous delta foresets which were subducted in the latest stages of convergence to form the variscan mountain chain.
Smelt reactions occur between Diamond & Fe & Ni oxides @ the core mantle boundary producing an upwelling of CO2 rich rock and a lot of heat carried up from the core along with the upwelling. the Basalt & CO2 is immediately explainable, including the size of the basalt province @ that point.
The interesting bit is the constraints on continental drift as it implies that the overlying Pangaea & Variscan mountain range did not move very much between the Permian Variscan range formation & the End Triassic Camp province. It could mostly have only moved NNE as any other direction would have put the Camp province in a different dot on the map. There must have been oceanic clearance room to the S. to enable climate mode#3 to operate,(this current passageway was blocked by Pangaea @ end Permian with mode#2 in operation).
Have a nice day: Ag
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