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Re: Why was Earth a fiery hell 55 million years ago?



>> 
Also 
as 
the 
the 
vapor 
condenses 
it 
extracts 
heat 
from 
the 
atmosphere.

>The 
other 
way 
around: 
it 
gives 
off 
heat 
when 
it 
condenses. 

Yep.

Don

----- Original Message ----
From: David Marjanovic <david.marjanovic@gmx.at>
To: DML <dinosaur@usc.edu>
Sent: Sunday, January 27, 2008 8:28:32 PM
Subject: Re: Why was Earth a fiery hell 55 million years ago?

> 
There 
was 
a 
relatively 
small 
(9km 
crater) 
marine
> 
impact 
(55+/- 
Ma)--Ragozinka--in 
what 
are 
now 
the 
Middle 
Urals 
in 
Russia,
> 
which 
could 
have 
easily 
triggered 
a 
methane 
release.

Cool!

> 
I'm 
also 
a 
fan 
of 
the 
idea 
of 
bolide 
impacts 
triggering 
volcanism 
> 
elsewhere
> 
on 
the 
globe, 
especially 
in 
the 
vicinity 
of 
their 
antipodes 
(e.g. 
> 
Chicxulub
> 
and 
the 
Deccan 
Traps).

No. 
The 
main 
episode 
of 
Deccan 
volcanism 
ended 
100,000 
years 
before 
the 
impact. 
Smaller 
episodes 
happened 
both 
earlier 
and 
later. 
Unless 
the 
impact 
had 
a 
time 
machine, 
it 
didn't 
cause 
any 
volcanism 
in 
India.

BTW...

> 
Also 
as 
the 
the 
vapor 
condenses 
it 
extracts 
heat 
from 
the 
atmosphere.

The 
other 
way 
around: 
it 
gives 
off 
heat 
when 
it 
condenses.