Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C

Details Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979gecoa..43..395h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 43, Mar. 1979, p. 395-404.

Physics

2

Carbon, Carbonaceous Chondrites, Heat Treatment, Metamorphism (Geology), Rare Gases, Sulfur, Abundance, Activation Energy, Argon Isotopes, Bismuth, Helium Isotopes, Krypton Isotopes, Neon Isotopes, Thallium, Xenon, Temperatures, Metamorphism, Meteorites, Rare Gases, Carbon, Sulfur, Allende Meteorite, Helium, Neon, Argon, Krypton, Isotopes, Xenon, Fractionation, Outgassing, Diffusion, Heating, Samples, Concentrations, Bismuth, Isotopic Ratios, Thermal Properties, Thallium

Scientific paper

Noble gases, C and S, are lost from Allende samples heated for 1 week at temperatures of 400-1000 C in a low pressure environment. In the extreme, losses of He-3 and He-4 are about 100 x while for C, S and Ne, Ar and Kr isotopes and Xe-132 these are less than or equal to 10 x. Except for He, these losses are less severe than those of Bi or Tl from samples heated in the same runs. Significant He, Ne and Ar isotopic fractionation during heating indicates preferential outgassing of specific reservoirs. Next to He, Ar-40 is the most labile of those species considered here but still less so than Bi or Tl. L-group (but not H- or LL-group) chondrites may have lost mobile elements like Tl while being outgassed after late impact-associated heating. A less likely alternative involving a collateral relation between condensation conditions and depth in a parent object may also explain the L-group trend.

Affiliated with

Also associated with

No associations

Rating

Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal metamorphism of primitive meteorites. VIII - Noble gases, carbon and sulfur in Allende /C3/ meteorite heated at 400-1000 C will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1651005