Exposure histories of lunar meteorites: ALHA81005, MAC88104, MAC88105, and Y791197

Conference · Fri Nov 01 04:00:00 EST 1991 · Geochimica et Cosmochimica Acta; (United States)

OSTI ID:5171790

Nishiizumi, K; Arnold, J R ^[1]; Klein, J; Fink, D; Middleton, R ^[2]; Kubik, P W; Sharma, P; Elmore, D ^[3]; Reedy, R C ^[4]

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1. Univ. of California, San Diego, (United States)
2. Univ. of Pennsylvania, Philadelphia (United States)
3. Univ. of Rochester, NY (United States)
4. Los Alamos National Lab., NM (United States)

The cosmogenic radionuclides {sup 41}Ca, {sup 36}Cl, {sup 26}Al, and {sup 10}Be in the Allan Hills 81005, MacAlpine Hills 88104, MacAlpine Hills 88105,and Yamato 791197 meteorites were measured by accelerator mass spectrometry (AMS). {sup 53}Mn in Allan Hills 81005 and Yamato 791197 was measured by activation. These four lunar meteorites experienced similar histories. They were ejected from near the surface of the Moon ranging in depth down to 400 g/cm{sup 2} and had very short transition times (less than 0.1 Ma) from the Moon to the Earth. A comparison of the cosmogenic nuclide concentrations in MacAlpine Hills 88104 and MacAlpine Hills 88105 clearly indicates that they are a pair from the same fall.

• OSTI ID: 5171790
• Report Number(s): CONF-9003166--
• Conference Information: Journal Name: Geochimica et Cosmochimica Acta; (United States) Journal Volume: 55:11
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
ACTIVATION ANALYSIS
AGE ESTIMATION
ALKALINE EARTH ISOTOPES
ALUMINIUM 26
ALUMINIUM ISOTOPES
BERYLLIUM 10
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 41
CALCIUM ISOTOPES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHLORINE 36
CHLORINE ISOTOPES
COSMIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
GEOLOGIC HISTORY
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTOPE DATING
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
LUNAR MATERIALS
MASS SPECTROSCOPY
MATERIALS
METEORITES
NEUTRON ACTIVATION ANALYSIS
NUCLEI
ODD-ODD NUCLEI
PETROGENESIS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES