Noble gas and carbon abundances of the Haverö, Dingo Pup Donga, and North Haig ureilites

Details Noble gas and carbon abundances of the Haverö, Dingo Pup Donga, and North Haig ureilites Noble gas and carbon abundances of the Haverö, Dingo Pup Donga, and North Haig ureilites

Mar 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973gecoa..37..547b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 37, Issue 3, pp.547-557

Computer Science

7

Scientific paper

Total carbon determinations on the Haverö, Dingo Pup Donga, and North Haig ureilites yield values of 2.07, 3.17, and 5.58 wt.%, respectively. Haverö and Dingo Pup Donga contain relatively large amounts of trapped Ar, Kr and Xe, which like the carbon content varies with grain size for Haverö. These two meteorites also contain dominant cosmic rayproduced He and Ne, and show 3 He exposure ages of ~23 m.y. and ~7 m.y., respectively. North Haig contains much smaller amounts of trapped gases and spallogenic gases, which may result from loss due to terrestrial weathering. The isotopic composition of Xe in five grain size analyses of Haverö and a whole rock analysis of Dingo Pup Donga shows the presence of a major solar-like Xe component. The presence of this solar component adds an additional complication to the concept of forming ureilites from carbonaceous chondrites.

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