Why the Cretaceous was hot

The atmosphere was denser then, there must have been more nitrogen
outgassed and the atmosphere was thicker so it transferred more heat
from the tropics to the poles - which is about proportional to its
density.

No models have been able to explain how the gradient was quite as
shallow as it was, so that's why the atmosphere must have been
thicker, that's the explanation! This could also explain why the
largest pterosaurs were so big, they would have been impractical
today, but again the ease of flight depends on the air density.

So how did the excess nitrogen disappear? I suppose it can be
subducted over long periods of time, returning it to the mantle Or
perhaps the K-T asteroid blew off most of the atmosphere - but
probably not, considering that the same thing persisted up until the
Eocene. Most of the world's vulcanism is under the sea, at the mid-
ocean vents, so if those have been less active in the Cenozoic, it
would explain the low nitrogen.

Andrew Usher

On 1 août, 12:14, Andrew Usher wrote:
The atmosphere was denser then, there must have been more nitrogen
outgassed and the atmosphere was thicker so it transferred more heat
from the tropics to the poles - which is about proportional to its
density.

No models have been able to explain how the gradient was quite as
shallow as it was, so that's why the atmosphere must have been
thicker, that's the explanation! This could also explain why the
largest pterosaurs were so big, they would have been impractical
today, but again the ease of flight depends on the air density.

So how did the excess nitrogen disappear? I suppose it can be
subducted over long periods of time, returning it to the mantle Or
perhaps the K-T asteroid blew off most of the atmosphere - but
probably not, considering that the same thing persisted up until the
Eocene. Most of the world's vulcanism is under the sea, at the mid-
ocean vents, so if those have been less active in the Cenozoic, it
would explain the low nitrogen.

Andrew Usher

Simply because Earth was closer then to the Sun ...seen in true
Geology as the Mother Star where from all planets emerge in
sequence...
The time column of Geological ages is seen in True Geology again as
the different position of Earth on Ecliptics in an Anisobaric &
Anisothropic thinner solar atmosphere ( of which we are part indeed)

and the present Frauds of the official so-called geology institutions
have no answer to your quest, Mate ! ... with either alleged K-T
impact ( in clear secondary-tertiary eras alleged junction ) or their
Retards ' mumbled explanations as to why Dinosaurs could not possible
live in present Earth environment !
Indeed some greater impact occurred very much closer to now and the
practical ROLE of Universities backed idiocy is to prevent people from
seeing the demonstration of such in the Earth Relief !

Make no mistake, Andrew, we are right in the Middle of the Dark Ages
and the Intellectual Inquisition is in full force through the world in
all fields of knowledge indeed

With best regards

Jean-Paul Turcaud
Australia Mining Pioneer
Discoverer of Telfer Mine ( Australia largest Copper & Gold MIne)
Nifty (Cu) & Kintyre (U, Th) Mines all in the Great Sandy Desert
Exploration Geologist & Offshore Consultant
Mobile + 33 6 50 17 14 64
Office + 33 5 16 19 14 21
Founder of the True Geology

~ Ignorance is the Cosmic Sin, the One never Forgiven ~


for background info.
http://www.tnet.com.au/~warrigal/grule.html
http://users.indigo.net.au/don/tel/index.html
http://users.indigo.net.au/don/tel/nac.html
http://members.iimetro.com.au/~hubbca/turcaud.htm
http://www.abc.net.au/rn/talks/bbing/stories/s28534.htm

Andrew Usher wrote:

The atmosphere was denser then, there must have been more nitrogen
outgassed and the atmosphere was thicker so it transferred more heat
from the tropics to the poles - which is about proportional to its
density.
[snip]

Dinosaur belches and farts and the Greenhouse Effect. If we wish to
save species we must end life.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2

Nitrogen is not a greenhouse gas - which is just as well considering it is
80% of the atmosphere. CO2 levels were significantly higher (1000 ppm).
Reason? Supercontinent breakup and the corresponding slowdown in the
carbonate-silicate cycle. Go do some reading.




"Andrew Usher" wrote in message
...
The atmosphere was denser then, there must have been more nitrogen
outgassed and the atmosphere was thicker so it transferred more heat
from the tropics to the poles - which is about proportional to its
density.

No models have been able to explain how the gradient was quite as
shallow as it was, so that's why the atmosphere must have been
thicker, that's the explanation! This could also explain why the
largest pterosaurs were so big, they would have been impractical
today, but again the ease of flight depends on the air density.

So how did the excess nitrogen disappear? I suppose it can be
subducted over long periods of time, returning it to the mantle Or
perhaps the K-T asteroid blew off most of the atmosphere - but
probably not, considering that the same thing persisted up until the
Eocene. Most of the world's vulcanism is under the sea, at the mid-
ocean vents, so if those have been less active in the Cenozoic, it
would explain the low nitrogen.

Andrew Usher

On Aug 1, 5:47 pm, "Landy" wrote:
Nitrogen is not a greenhouse gas - which is just as well considering it is
80% of the atmosphere.

Of course not, but it's the only gas that could make our atmosphere
significantly denser. This results in more heat transfer from equator
to pole.

Andrew Usher

On Aug 1, 9:14 am, Uncle Al wrote:

Dinosaur belches and farts and the Greenhouse Effect. If we wish to
save species we must end life.

Let me try again. I said that the very shallow equator-to-pole
gradient of the Cretaceous (~10C) requires the atmosphere
to have been thicker. This is explained by greater discharge
of nitrogen at mid-ocean vents. Let's say there might have
been 50% more nitrogen in the air, and we had 25% oxygen.
They the total air pressure would have been 1.4 bar.

Note what I said about pterosaurs - a 1.4 bar atmosphere
would increase the weight of the largest possible flying
creatures by (1.4)^3 ~ 2.5 (square cube law), which is
enough to justify the largest pterosaurs.

Now if this is true, there must have been a significant
increase in burial of nitrogen in the Cenozoic. What might
this be - I don't know, actually, I have never been able
to find and good information of the nitrogen cycle.

Andrew Usher

On Aug 1, 8:58 am, Sam Wormley wrote:

Among other things CO2 levels were higher.

Of course, around 1,000 ppm, but that's not enough to explain
the climate.

Andrew Usher

On Aug 1, 8:58 pm, Sam Wormley wrote:

Among other things CO2 levels were higher.

Of course, around 1,000 ppm, but that's not enough to explain
the climate.

Andrew Usher

What's your source of "the climate" Andrew?

Oh, for example, the first result I found in a search:

http://ff.org/centers/csspp/library/...060918_16.html

saying 'We ... do not succeed in simulating warm enough polar
temperatures'.

I see no reason why more air couldn't be the missing reason.

Andrew Usher

On Aug 1, 9:27 pm, Sam Wormley wrote:
Andrew Usher wrote:
On Aug 1, 8:58 pm, Sam Wormley wrote:

Among other things CO2 levels were higher.
Of course, around 1,000 ppm, but that's not enough to explain
the climate.
Andrew Usher
What's your source of "the climate" Andrew?

Oh, for example, the first result I found in a search:

http://ff.org/centers/csspp/library/...060918_16.html

saying 'We ... do not succeed in simulating warm enough polar
temperatures'.

I see no reason why more air couldn't be the missing reason.

Andrew Usher

See:http://www.junkscience.com/sep06.html
(down about 60 percent of the page)

The only relevant paper listed there is exactly the same one as
I just linked to.

Andrew Usher

"Andrew Usher" wrote in message
...
On Aug 1, 5:47 pm, "Landy" wrote:
Nitrogen is not a greenhouse gas - which is just as well considering it
is
80% of the atmosphere.

Of course not, but it's the only gas that could make our atmosphere
significantly denser. This results in more heat transfer from equator
to pole.

Who says it was denser? It does not need to be denser.