Other
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001m%26ps...36.1057k&link_type=abstract
Meteoritics & Planetary Science, vol. 36, no. 8, pp. 1057-1066 (2001)
Other
13
Scientific paper
Over 4450 meteorite specimens with a total mass of 168760 g have been found in the Gold Basin (L4) strewn field over an area of 225 km2. The meteorite is a breccia, composed only of fragments of L-chondrite materials. The parent meteoroid had a kinetic energy equivalent to ~5 to 50 ktons when it hit the top of the atmosphere. Cosmogenic nuclide studies indicate the meteorite has a terrestrial age of 15000 +/- 600 years, corresponding to the Late Pinedale portion of the Wisconsin Glaciation. Conditions in the Gold Basin, which is now part of the Mojave Desert, were wetter and cooler at the time of the fall. Mössbauer analyses indicate the sample is 30 to 35% oxidized. This is less than that in meteorites with similar ages found in eastern New Mexico, but comparable to that found in meteorites from the Sahara and the Nullarbor Region. Oxidation is likely to have occurred soon after the fall, when exposure to precipitation was at its maximum. Four other new meteorites were also found in the Gold Basin strewn field.
Berry Frank J.
Bland Philip A.
Hill Dolores H.
Kring David A.
McHargue Lanny R.
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