Ok.....since there are carbonates, similar to limestones....does this mean that there was once life on Mars? Or did these carbonates come from other sources? Could one of our esteemed geologists explain this to us laymen?
Sent from my iPhone On Oct 2, 2008, at 6:44 PM, CaverArch <[email protected]> wrote: > > from Sigma Xi, The Scientific Research Society > > Today's Headlines - October 2, 2008 > > Water's Role in Martian Chemistry Becoming Clearer > > http://www.sciencenews.org/view/generic/id/37013/title/Waters_role_in_Martian_chemistry_becoming_clearer > from Science News > > Perched on a vast plain above the arctic circle of the Red Planet, > NASA's Phoenix Mars Lander has found new evidence that liquid water > was once present in the north polar region and interacted with > minerals there. Phoenix scientists reported the findings September > 29 during a NASA press briefing. > > Two Phoenix experiments identified calcium carbonates and clays in > soil samples scooped up by the craft's robotic arm. On Earth, both > minerals are associated with the presence of liquid water. > > Carbonates such as limestones form on Earth when carbon dioxide from > the atmosphere dissolves in liquid water, making carbonic acid. The > acid eats away at rocks, which eventually become carbonate deposits > such as the White Cliffs of Dover. > > http://snipurl.com/3zsdm > > > Roger Moore > > > > Find phone numbers fast with the New AOL Yellow Pages!
