[meteorite-list] How does regolith get stoned?

From: Randy Korotev <korotev_at_meteoritecentral.com>
Date: Sun Aug 27 17:13:26 2006
Message-ID: <6.2.3.4.0.20060827155148.03907b70_at_levee.wustl.edu>

Shock compression. The shock wave from an impact compresses the
"powder." Where grains touch, the pressure can be very high. There
may also be a little sintering or whole-scale melting in some
regolith breccias, but it doesn't really require heat to make a
regolith breccia. An aspirin tablet is just compressed powder.

Randy Korotev



At 20:27 26-08-06 Saturday, you 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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