Water on Venus.

So the sun was not as hot several billion
years ago in comparison with now.
If Venus had water it could lock much
of its carbon dioxide in its modern
atmosphere in carbonate rocks.

Does anyone have any links or
any references to the theoretical
feasibility or unfeasibility concerning
water on Venus many billions of
years ago?

Strange Creature wrote:
So the sun was not as hot several billion
years ago in comparison with now.
If Venus had water it could lock much
of its carbon dioxide in its modern
atmosphere in carbonate rocks.

Does anyone have any links or
any references to the theoretical
feasibility or unfeasibility concerning
water on Venus many billions of
years ago?

Abstract online via the following DOI link:
http://dx.doi.org/10.1016/j.actaastro.2006.04.011

(This had earlier been presented at the International Astronautical
Federation Congress in 2004, the paper can be found at
http://mit.edu/aeroastro/www/people/...enus_IAF04.pdf )

Key fact Isotope separation. Venus in the past had a similar amount of
water to Earth. The amount of Deuterium is proportional to loss. The
water there is on Venus is distictly "heavier" than on Earth.

Strange Creature wrote:
So the sun was not as hot several billion
years ago in comparison with now.
If Venus had water it could lock much
of its carbon dioxide in its modern
atmosphere in carbonate rocks.

Carbon dioxide is not an inherited component of the solar system;
there is none on Jupiter, Moon, only a trace on Pluto or Titan.
CO2 is formed by the action of oxygen on methane (CH4).
Since there is no free interstellar oxygen, all oxygen on Venus
was derived from UV splitting of water.
http://aramis.obspm.fr/mol/list-mol.html
Two molecules of H2O were destroyed for the creation of
each molecule of CO2, which means that Venus had
at least twice as much water as current CO2. John Curtis