Large igneous provinces linked to extinction events

Science Daily ^ | October 30, 2015 | Geological Society of America

[JimSEA]

Mass extinction events are sometimes portrayed in illustrations of volcanic eruptions causing widespread destruction. According to Dr. Richard E. Ernst of Carleton University, Ottawa, Canada, expert on Large Igneous Provinces (LIPs), this interpretation may have some truth behind it, but not in the instantaneous way we might think. Ernst will report on his research on 1 November at the Geological Society of America's Annual Meeting in Baltimore, Maryland, USA.

The basaltic lava flowing from ancient volcanoes and the portion of magma (liquid rock) emplaced underground can create geologic conditions linked with climate change and, subsequently, extinction events. This climatic effect is particularly true for LIPs, in which mainly basaltic magma up to millions of cubic kilometers can be emplaced in a geologically short time of less than a few million years.

"The most dramatic climatic effect is global warming due to greenhouse-gases from LIPs," explains Ernst. "Subsequent cooling (and even global glaciations) can be caused by CO2 drawdown by weathering of LIP-related basalts."

[Moonman62]

[21twelve]

Reunite Gondwanaland!

[Moonman62]

These “scientist” use the term positive feedback without the slightest understanding of positive feedback and its associated effects.

...

Yep. They are paid shills for bad government, not scientists.

[moovova]

Doesn’t radon gas come from igneous rock? As opposed to sedimentary and metamorphic rock?

[moovova]

“Reunite Gondwanaland!”

That would upset a lot of people...especially African-Americans.

[Fraxinus]

There was that time Africa tried to go to Ohio.......

http://csmres.jmu.edu/geollab/vageol/vahist/K-LatPal.html

[Little Bill]

If you look at the data you could come to the conclusion that the K/T extinctions where due to a double hit in Mexico and where India was, Shiva hit.

[JimSEA]

I’ve heard that suggested.

[Little Bill]

Look at the data. I was looking for info on the Deccan Traps when I found this theory, makes a lot of sense when you look at extent of the extinctions on the K/T boundary.

[JimSEA]

The dinosaurs might have been in decline due to the long term affect of the Deccan Traps and were finished of by the asteroid? It does sound quite possible.

[Little Bill]

I think that if you look at some of the arguments the Deccan Traps where caused by the Shiva impact.

[Little Bill]

I think that if you look at some of the arguments the Deccan Traps where caused by the Shiva impact.

[SunkenCiv]

"The most dramatic climatic effect is global warming due to greenhouse-gases from LIPs," explains Ernst. "Subsequent cooling (and even global glaciations) can be caused by CO2 drawdown by weathering of LIP-related basalts."

IOW, bull****.

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[JimSEA]

I’m aware of the Shiva impact theory. However, 66 m years ago the location of India was over the Reunion plume area on its way to its collision with the Eurasian plate. So there a couple of question. Somebody will figure it out.

[moovova]

Ha...”Guess Who’s Coming To Dinner”.

______________

Seriously though...

“...some of the largest coal reserves in the world are contained within them. Those reserves fueled the industrial revolution, and helped build the United States into the superpower it is. It is easy to underestimate their importance...”

I’ll save reading the rest on the desktop. Thanks for the link.