[meteorite-list] Largest Crater in the Sahara Desert and LDG

From: Mike Fowler <mqfowler_at_meteoritecentral.com>
Date: Fri Mar 3 18:16:16 2006
Message-ID: <722D2C0A-1A8E-4232-AB20-0169DB28DA62_at_mac.com>

Hi List,

My two cents worth: Tektites are blasted into space and then
return. Horizontal flow, blast , ejection or whatever, would not a
tektite make, at least in the classical sense.

Mike Fowler



> Where is the dividing line between impactite and
> tektite? I'd like to hear what others may understand,
> but my impression is that it fundamentally hinges on
> distance the glassy material is ejected from the
> crater. Material found only in and immediately around
> the source crater is impactite. Stuff blasted tens to
> hundreds of km or more crosses the definitional
> boundary into "tektites".
>
> If this is the criterion, LDG was already home free in
> my book insofar as the known strewn field has a long
> axis of at least 150 km, so even if there was a
> now-erosionally removed crater at one end of the
> strewn field proper, some of the glass would've
> already required over 100 km ejection distance.
Received on Fri 03 Mar 2006 06:16:10 PM PST