Space/Science — HabitableZone

Space/Science » in reply to Re: Mars ice

Rate of Churn

There is no subduction on Mars, so essentially after the LPBE we have the surface pounded and then pounded again for several billion years.

Some of the major regularly recurrent strata should be tied to the bombardments which are "hypothesized" to occur with the passage of our own Solar System through the plane of our galaxy, the Milky Way, chaotically every 26 million years or so.

Allowing for compression, the widths of the strata should reflect in some way the time taken for Mars to return to the equilibrium state. These were the times of outgassing. Count the strata, and you have the number of outgassing events.

Of course, you have the gradual production of more and more rubble over time.

Further, given Mars 1/3 gravity, there's the matter of the ejection of atmosphere in the impacts themselves.

ep

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