[meteorite-list] 7 different Pampa meteorites in 33 km2
From: Donald O'Keeffe <donald.okeeffe_at_meteoritecentral.com>
Date: Thu Apr 22 09:48:12 2004
Hi Rob and list,
Thank you for that information on Roach Dry Lake and your statistical analysis. I've always held up Lucerne as an example when talking with
other hunters out in Gold Basin. Be alert; there are quite a few different stones here. Now, I have more ammunition: the Pampa and Roach.
"Matson, Robert" wrote:
> Hi Rodrigo, Donald and list:
> Both gentlemen have remarked on the concentrations of different
> meteorite types in seemingly small geographic areas -- specifically
> the 7 different L-chondrites at Pampa (33 km^2), and an increasing
> number at Gold Basin distinct from the main L4 strewnfield (area
> covered?). In dry desert locations, this is proving to be the
> rule rather than the exception. Consider Lucerne Dry Lake in
> California, where 17 stones represent 10 separate falls in an
> area spanning only 16 km^2. There is also Roach Dry Lake in
> Nevada with 4 distinct meteorites (Primm, Roach Dry Lake, Beer
> Bottle Pass and Devil Peak).
> There are more than a half-dozen other locations yet to be
> reported in the West that all have multiple unpaired finds.
> When I combine the total unique finds at all these locations
> and divide by the sum of all the surface areas, I find there
> is on average one meteorite per 2.3 km^2. As not all of these
> areas have been searched with equal intensity, the density
> will continue to rise as additional finds are made.
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Received on Wed 17 Oct 2001 11:23:39 AM PDT