Nuclear Tracks and Noble Gases in Ten Unequilibrated H-Chondrites from the Sahara

Details Nuclear Tracks and Noble Gases in Ten Unequilibrated H-Chondrites from the Sahara Nuclear Tracks and Noble Gases in Ten Unequilibrated H-Chondrites from the Sahara

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1101r&link_type=abstract

Lunar and Planetary Science, volume 27, page 1101

Other

Ablation, Chondrites: H, Helium-3: Loss, Noble Gases, Nuclear Tracks

Scientific paper

We present nuclear track densities as well as concentrations and isotopic composition of He and Ne of ten unequilibrated H-chondrites. All meteorites are recent finds from the Algerian Sahara and have low shock stages (S1-S2). According to the presence of trapped solar gases and solar-cosmic-rays- irradiated olivines two of the investigated chondrites are regolith breccias, two other meteorites show loss of cosmogenic ^3He accompanied by shortening of nuclear tracks. For most of the meteorites the shielding depth and preatmospheric radii are estimated.

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