...where are the carbonate deposits then?
New Findings Could Dash Hopes For Past Oceans On Mars
Tempe - Aug 26, 2003
After a decades-long quest, scientists analyzing data from NASA's Mars Global Surveyor spacecraft have at last found critical evidence the spacecraft's infrared spectrometer instrument was built to search for: the presence of water-related carbonate minerals on the surface of Mars.
However, the discovery also potentially contradicts what scientists had hoped to prove: the past existence of large bodies of liquid water on Mars, such as oceans. How this discovery relates to the possibility of ephemeral lakes on Mars is not known at this time.
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The combination of ubiquitous olivine deposits with that lack of carbonate desposits deals a serious challenge to any notion of a warm and wet Mars.
Space/Science » in reply to Look at the facts.
Uh...Robert...