From: Mike Lorrey (mlorrey@datamann.com)
Date: Mon Dec 17 2001 - 12:26:25 MST
"Robert J. Bradbury" wrote:
>
> On Fri, 14 Dec 2001 Spudboy100@aol.com wrote:
>
> > Both. The moon has undergone volcanic subduction of ores over the last 4
> > billion years.
>
> Hmmm.... I know there are volcanos on Mars & Io and I think a
> couple of other moons, but I didn't think our moon had any.
> I thought the general consensus was its been a dry and
> relatively solid planet most of its life.
>
> I'm willing to stand corrected if you can find me a picture
> of a volcano on the moon.
If there were, they'd be of the Venusian variety (as would subduction
areas, which would not be fault lines) given that the moon is mostly
crustal and outer mantle material, as is Venus. However, they would most
certainly be long dead by now.
As for mineral concentrations, while there was no period when life
existed on the moon that would concentrate minerals, nor a 'wet' period,
or any period with a significant atmosphere very long after coalescing,
given that it was likely formed largely from crustal and mantle material
from earth, it is possible that some areas on the pre-impact Earth where
early life had concentrated minerals may show up on or near the lunar
surface, with the concentrations not too badly diffused.
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