[meteorite-list] Irons and fusion crusts

[Gary K. Foote]

Hi Phil,

I don't mean to split hairs, but what is the difference between a thermal alteration zone 
and a fusion crust?  Is there a difference? Is not a fusion crust a thermal alteration 
zone?

Gary

On 15 Jan 2007 at 19:07, Phil Morgan wrote:

> I think we're seeing a thermal 
> alteration zone rather than anything that could be called a fusion crust.