Cosmic-ray-produced Cl-36 and Mn-53 in Allan Hills-77 meteorites

Computer Science

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Chlorine, Cosmic Rays, Manganese Isotopes, Meteoritic Composition, Antarctic Regions, Chronology, Glaciology, Mass Spectrometers, Neutron Activation Analysis, Radioactive Age Determination, Weathering, Alha77001, Alha77002, Alha77003, Alha77214, Alha77256, Alha77257, Alha77272, Alha77278, Alha77299, Meteorites, Manganese, Chlorine, Antarctic Meteorites, Allan Hills Meteorites, Isotopes, Cosmic Rays, Origin, Neutron Activation Analysis, Mass Spectrometry, Weathering, Terrestrial Ages, Chemistry, Composition,

Scientific paper

Cosmic-ray-produced Mn-53 has been determined by neutron activation in nine Allan Hills-77 meteorites. Additionally, Cl-36 has been measured in seven of these objects using tandem accelerator mass spectrometry. These results, along with C-14 and Al-26 concentrations determined elsewhere, yield terrestrial ages ranging from 10,000 to 700,000 years. Weathering was not found to result in Mn-53 loss.

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