Australian Politics Forum - Last Days of the Dinosaurs.

Jasin

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Last Days of the Dinosaurs.
Dec 19^th, 2020 at 11:36am

Here's a good little read.
https://www.popularmechanics.com/science/animals/a34968104/mass-extinctions-happ...

One of the famous Mass Extinctions was due to a lot of METHANE in the atmosphere that wiped out 95% of all life.
Throw in the fact that the 'average' global temperature of 'stability' in Earth's history was much more higher than it is today. Can Humans survive a temperature of 60+C high?
Doubt it unless everyone was wearing heat suits and scuba tanks.

The most famous Mass Extinction is the Meteor one that wiped out the Saurian phase. The Military like this one, because it justifies putting weapons in space to protect the planet... not that they will be pointing at earth occassionally. Wink

This suits the Military more than the 'Polluted' Mass Extinctions of Climate Changes - which are more common.

Coincidence that Sapiens entered Australia and 'suddenly' all the Mega Fauna 'dissapeared' from giant fire-farming BBQ's and hunting - although, so as not to be considered 'racist', is now blamed on Climate Change. Only a severe 10,000 year drought which ended recently for the Aboriginal peoples here - really made any 'environmental' impact (it actually scuttled Aboriginal Culture here, 'before' Whiteys came to finish the job. Even the Central American Civilisations were scuttled by Mass Droughts.

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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.

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lee

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Re: Last Days of the Dinosaurs.
Reply #1 - Dec 19^th, 2020 at 12:40pm

Jasin wrote on Dec 19^th, 2020 at 11:36am:

Here's a good little read.
https://www.popularmechanics.com/science/animals/a34968104/mass-extinctions-happ...

One of the famous Mass Extinctions was due to a lot of METHANE in the atmosphere that wiped out 95% of all life.

Wrong. It is suspected and has nothing to do with the material supplied. Methane is not mentioned.

The new study is a computer compiled learning AI.

"Non-marine tetrapods (amphibians, reptiles, birds and mammals) have apparently experienced at least 10 distinct episodes of intensified extinctions over the past 300 My. Eight of these ten non-marine extinction events are concurrent with known marine-extinction episodes, which previously yielded evidence for an underlying period of ~26.4 to 27.3 My. We performed circular spectral analysis and Fourier transform analysis of the ages of the ten recognised tetrapod-extinction events, and detected a statistically significant (99% confidence) underlying periodicity of ~27.5 My. We also find that the eight coeval non-marine/marine-extinction pulses all occurred at the times of eruptions of Large Igneous Provinces (LIPs) (continental flood-basalts and oceanic plateaus), with potentially severe environmental effects. Three of these co-extinction episodes are further correlated with the ages of the three largest (≥100-km diameter) impact craters of the last 260 My, which are also apparently capable of causing extinction events. These findings suggest that global cataclysmal events with an underlying periodicity of ~27.5 My were the cause of the coordinated periodic extinction episodes of non-marine tetrapods and marine organisms."

https://www.tandfonline.com/doi/full/10.1080/08912963.2020.1849178

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Bobby.

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Re: Last Days of the Dinosaurs.
Reply #2 - Dec 19^th, 2020 at 1:48pm

Posted by Monk at his MRB:

Even without the giant meteorite the day of the dinosaurs was over. They were very specialised and things were changing:

1. Grasslands were appearing, allowing small mammals to thrive. Animals preying on these mammals would also eat dinosaur eggs

2. Conifers were being replaced by flowering, deciduous trees—what did the dinosaurs eat in winter after deciduous trees lost their leaves?

Dinosaurs left behind birds, snakes and crocodiles and alligators.

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Bobby.

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Re: Last Days of the Dinosaurs.
Reply #3 - Dec 19^th, 2020 at 2:35pm

I just replied to Monk.
He wasn't happy about me copying "his" content.

http://www.ozpolitic.com/forum/YaBB.pl?num=1608060045/0#3

Quote:

Monk - you punk,
Don't call me Booby.
You have no copyright on anything posted here.
In any case I attributed the work to you.
I deleted your last post as it contained swear words.
So many people are banned from here that they need a place
to post about cats and critters so
I have supplied their needs.

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Jasin

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Re: Last Days of the Dinosaurs.
Reply #4 - Dec 20^th, 2020 at 2:00pm

lee wrote on Dec 19^th, 2020 at 12:40pm:

Jasin wrote on Dec 19^th, 2020 at 11:36am:

Here's a good little read.
https://www.popularmechanics.com/science/animals/a34968104/mass-extinctions-happ...

One of the famous Mass Extinctions was due to a lot of METHANE in the atmosphere that wiped out 95% of all life.

Wrong. It is suspected and has nothing to do with the material supplied. Methane is not mentioned.

The new study is a computer compiled learning AI.

"Non-marine tetrapods (amphibians, reptiles, birds and mammals) have apparently experienced at least 10 distinct episodes of intensified extinctions over the past 300 My. Eight of these ten non-marine extinction events are concurrent with known marine-extinction episodes, which previously yielded evidence for an underlying period of ~26.4 to 27.3 My. We performed circular spectral analysis and Fourier transform analysis of the ages of the ten recognised tetrapod-extinction events, and detected a statistically significant (99% confidence) underlying periodicity of ~27.5 My. We also find that the eight coeval non-marine/marine-extinction pulses all occurred at the times of eruptions of Large Igneous Provinces (LIPs) (continental flood-basalts and oceanic plateaus), with potentially severe environmental effects. Three of these co-extinction episodes are further correlated with the ages of the three largest (≥100-km diameter) impact craters of the last 260 My, which are also apparently capable of causing extinction events. These findings suggest that global cataclysmal events with an underlying periodicity of ~27.5 My were the cause of the coordinated periodic extinction episodes of non-marine tetrapods and marine organisms."

https://www.tandfonline.com/doi/full/10.1080/08912963.2020.1849178

You're right Lee. That link doesn't state 'specifically' that Methane Mass Extinction. That was taken from previous older sources and docos which may be debatable now?

But it is apparent that 'Climate' has produced the majority of Mass Extinctions. Few times, the planet has been 'totally' covered in ice/snow for millions of years.

We say we live in a habitable zone as a planet. But this zone can produce major inhabitable conditions upon the planet too. Seems the 'habitable zone' on this Planet is also just a 'fine line' around the sun.

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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.

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Jasin

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Re: Last Days of the Dinosaurs.
Reply #5 - Dec 20^th, 2020 at 2:02pm

Bobby. wrote on Dec 19^th, 2020 at 2:35pm:

I just replied to Monk.
He wasn't happy about me copying "his" content.

http://www.ozpolitic.com/forum/YaBB.pl?num=1608060045/0#3

Quote:

Monk - you punk,
Don't call me Booby.
You have no copyright on anything posted here.
In any case I attributed the work to you.
I deleted your last post as it contained swear words.
So many people are banned from here that they need a place
to post about cats and critters so
I have supplied their needs.

This is Monk's Forum apparently, not FD's. Roll Eyes

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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.

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