Permian History Methane Gas Explosion From Ocean Wiped Out 95% Of Life

[ScienceRocks]

Permian History Methane Gas Explosion From Ocean Wiped Out 95% Of Life



What do you think about this?

 

[Tank]

That's one big fart

 

[Old Rocks]

There does seem to be evidence for a methane role in the PT extinction.

Carbon isotopic evidence for terminal-Permian methane outbursts and their role in extinctions of animals, plants, coral reefs, and peat swamps | Wetlands through Time | GeoScienceWorld Books | GeoScienceWorld


A gap in the fossil record of coals and coral reefs during the Early Triassic follows the greatest of mass extinctions at the Permian-Triassic boundary. Catastrophic methane outbursts during terminal Permian global mass extinction are indicated by organic carbon isotopic (δ13Corg) values of less than –37‰, and preferential sequestration of 13C-depleted carbon at high latitudes and on land, relative to low latitudes and deep ocean. Methane outbursts massive enough to account for observed carbon isotopic anomalies require unusually efficient release from thermal alteration of coal measures or from methane-bearing permafrost or marine methane-hydrate reservoirs due to bolide impact, volcanic eruption, submarine landslides, or global warming. The terminal Permian carbon isotopic anomaly has been regarded as a consequence of mass extinction, but atmospheric injections of methane and its oxidation to carbon dioxide could have been a cause of extinction for animals, plants, coral reefs and peat swamps, killing by hypoxia, hypercapnia, acidosis, and pulmonary edema. Extinction by hydrocarbon pollution of the atmosphere is compatible with many details of the marine and terrestrial fossil records, and with observed marine and nonmarine facies changes. Multiple methane releases explain not only erratic early Triassic carbon isotopic values, but also protracted (∼6 m.y.) global suppression of coral reefs and peat swamps

 

[Old Rocks]

As for the danger of such an occurance today, I think we are in more danger from a series of much smaller eruptions of methane in the Arctic Ocean.

'Fountains' of methane 1,000m across erupt from Arctic ice - a greenhouse gas 30 times more potent than carbon dioxide

• 'Methane fields on a scale not seen before' - researcher
• More than 100 fountains, but could be 'thousands'
• Could cause rapid climate change

The Russian research vessel Academician Lavrentiev conducted a survey of 10,000 square miles of sea off the coast of eastern Siberia.

They made a terrifying discovery - huge plumes of methane bubbles rising to the surface from the seabed.

'We found more than 100 fountains, some more than a kilometre across,' said Dr Igor Semiletov, 'These are methane fields on a scale not seen before. The emissions went directly into the atmosphere.'



Read more: 'Fountains' of methane 1,000m across erupt from Arctic ice - a greenhouse gas 30 times more potent than carbon dioxide | Daily Mail Online
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[Toddsterpatriot]

Permian History Methane Gas Explosion From Ocean Wiped Out 95% Of Life



What do you think about this?

We're fracking as fast as we can!!!!!

 

[BuckToothMoron]

Interesting theory, what are ya going to do? Shit happens. Life on earth as we know it, will likely get wiped out again....and again.

 

[Old Rocks]

Well, when you see a train racing toward you, you are just too dumb to step off the tracks? Then again, I guess you are.

Since we don't know just at what point that the methane will let go, we don't know if we have already crossed that line, or whether we are a good ways from it. Ceasing to put GHGs in the atmosphere is certainly one way to prevent going over the line if we have not already done that.