[meteorite-list] How does regolith get stoned?

[Rob McCafferty]

Probably impact pressures from meteorites. I suppose
heat during the process may be involved but NWA3136
fragments look quite similar to actual regolith. I
would imagine impact melting would change its
appearance more as NWA482 has obvious melt veins which
lunar anorthosite return samples don't seem to have.

What do I know! Probably completely wrong. I've only
seen little bits.

Rob McC

--- Darren Garrison <cynapse at charter.net> wrote:

> I'm wondering how lunar/asteroidal regolith becomes
> reprocessed into solid
> brecciated stones.  Is it reburied to a depth that
> heat and pressure do the job,
> or maybe "cold welding" plays a role?
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