Poison bacteria set up worst extinction

Discovery ^ | May 4, 2009 | Michael Reilly

[decimon]

In the ancient oceans, stagnant depths harbored poison-belching bacteria that crippled life on Earth, leaving it vulnerable to a knockout punch from volcanic eruptions, according to a new study.

Three to four million years before the Permian-Triassic extinction, also known as the Great Dying, the seas were already becoming oxygen-starved and sour, said the study in the journal Earth and Planetary Science Letters.

[decimon]

One way or the other ping.

[Conspiracy Guy]

“poison-belching bacteria that crippled life on Earth” was this called the Democrat Party?

[decimon]

“poison-belching bacteria that crippled life on Earth” was this called the Democrat Party?

That's a different organism, taxteria.

[Conspiracy Guy]

I rest my case.

[count-your-change]

Whoa!!?? A “new study”? That cinches it for me.

[RegulatorCountry]

... and that’s where the ancient Lorax came in.

[SunkenCiv]

Thanks decimon. Somewhere along the line, today, I was reading about supposed shortage of nickel (geologically) that led somehow to the large oxygen component in our atmosphere. :') This looks like another bit of toil (or sniffing toil) from earthbound (and hidebound) opponents of impacts. :')

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[SunkenCiv]

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	Gods Graves Glyphs	Thanks decimon. Somewhere along the line, today, I was reading about supposed shortage of nickel (geologically) that led somehow to the large oxygen component in our atmosphere. :') This looks like another bit of toil (or sniffing toil) from earthbound (and hidebound) opponents of impacts. :') To all -- please ping me to other topics which are appropriate for the GGG list. GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
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[decimon]

Whoa!!?? A “new study”? That cinches it for me.

New and improved.

[decimon]

Impact deniers. They will be dealt with, comrade, they will be dealt with. ;-)

[SunkenCiv]

Darn right. They’ll be kicked in the asteroid!

[decimon]

... and that’s where the ancient Lorax came in.

The Lorax was flatulent?

[count-your-change]

“Fresh and Original”? And “Groundbreaking”, too.
“A paradigm shift that will demand a rewrite of history”.

O.K., send the reporters in, the script is ready.

[Fred Nerks]

..found the culprit, he's an Australian...

Roger Summons Professor Department of Earth, Atmospheric and Planetary Sciences, MIT E25-633, 45 Carleton Street Cambridge, MA 02139 USA

I am interested in biogeochemistry and geobiology with the following themes:

lipid chemistry of geologically significant microbes and microbially dominated ecosystems organic and isotopic indicators of climate change, biotic evolution and mass extinction...

SOURCE

[SunkenCiv]

Figures. ;’) ;’) ;’)

climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction climate change is the only cause of mass extinction...

[wolfcreek]

Same thing happens on a smaller scale every day.

http://www.whoi.edu/redtide/

[decimon]

Bear Bryant’s fault.

[colorado tanker]

This looks like another bit of toil (or sniffing toil) from earthbound (and hidebound) opponents of impacts. :')

Why, sure. Poison belching deep sea bacteria is a way more plausible explanation. :-))

[gleeaikin]

I also favor the major impact theory, but also consider that this may have stirred up major volcanic effusion of the Siberian Trappes with lots of air polution. Also, it may by that the existence of a major supercontinent may have led to reduced ocean circulation. Certainly a major impact could have stirred up all these dead bacterial toxins, and perhaps also released ocean methane in large quantities. It is still a big puzzle.

I am currently reading “The Great Dying”, by Kenneth Hsu, 1986, about the great dinosaur extinction event. It took more than 30 years from the first suggestion of an impact even for scientists to begin a serious search for an impact site. Being much earlier the search for a Permian impactor will be that much harder.