Computer Science
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001m%26ps...36...23b&link_type=abstract
Meteoritics & Planetary Science, vol. 36, no. 1, p. 23-30 (2001).
Computer Science
27
Scientific paper
We report on major and trace element analyses obtained by, respectively, ICP-AES and ICP-MS of three different aliquots of the new Saharan shergottite Dar al Gani 476 (DaG476). The new analyses are in excellent agreement with previous data (Zipfel et al. 2000). Ba, Sr and U abundances, together with the presence of carbonate, suggest that the sample has been significantly weathered. Three rare earth element (REE) patterns (normalized to CI) determined on three different aliquots of the sample all show similar shapes. The heavy REEs are flat with a slight depletion at the heavy end and a strong depletion from Dy to Pr. All of the patterns display an upturn to La which we interpret as being caused by the introduction of a terrestrial component. Taking the terrestrial contamination into account, this study demonstrates that DaG476 is one of the most depleted of the shergottites, and, just like QUE94201 (Dreibus et al. 1996), displays very low Zr/Hf ratios. It appears that the Zr/Hf ratios of shergottites are not uniform, and have been significantly fractionated by martian mantle processes.
Barrat Jean-Alix
Blichert-Toft Janne
Keller Frank
Nesbitt Robert W.
No associations
LandOfFree
Bulk chemistry of Saharan shergottite Dar al Gani 476 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 Bulk chemistry of Saharan shergottite Dar al Gani 476, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bulk chemistry of Saharan shergottite Dar al Gani 476 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-901213