Elemental mapping by Dawn reveals exogenic H in Vesta's regolith.

@article{Prettyman2012ElementalMB,
  title={Elemental mapping by Dawn reveals exogenic H in Vesta's regolith.},
  author={T H Prettyman and David W. Mittlefehldt and N. Yamashita and David J. Lawrence and Andrew W. Beck and William C. Feldman and tiMotHy J. Mccoy and H Y McSween and Michael J. Toplis and T. N. Titus and Pasquale Tricarico and R. C. Reedy and John S. Hendricks and Olivier Forni and Lucille Le Corre and J. Li and Hugau Mizzon and Vishnu Reddy and Carol A. Raymond and Christopher T Russell},
  journal={Science},
  year={2012},
  volume={338 6104},
  pages={242-6}
}
Using Dawn's Gamma Ray and Neutron Detector, we tested models of Vesta's evolution based on studies of howardite, eucrite, and diogenite (HED) meteorites. Global Fe/O and Fe/Si ratios are consistent with HED compositions. Neutron measurements confirm that a thick, diogenitic lower crust is exposed in the Rheasilvia basin, which is consistent with global magmatic differentiation. Vesta's regolith contains substantial amounts of hydrogen. The highest hydrogen concentrations coincide with older… CONTINUE READING
Highly Cited
This paper has 111 citations. REVIEW CITATIONS

From This Paper

Figures, tables, and topics from this paper.

Citations

Publications citing this paper.
Showing 1-10 of 35 extracted citations

112 Citations

0204060'13'15'17
Citations per Year
Semantic Scholar estimates that this publication has 112 citations based on the available data.

See our FAQ for additional information.

References

Publications referenced by this paper.
Showing 1-10 of 60 references

Mineralogy of carbonaceous chondritic microclasts in howardites : identification of C 2 fossil micrometeorites

  • M. E. Zolensky Gounelle, J.-C. Liou, P. A. Bland, O. Alard
  • Geochim . Cosmochim . Acta
  • 2012

Cloutis et al., Meteorit

  • E A.
  • Planet. Sci. 45,
  • 2010

Helium , neon , and argon in meteorites : A data collection

  • K. T. Karl, L. Franke Schultz
  • Meteorit . Planet . Sci .
  • 2010

Spectral properties of angrites

  • T. J. McCoy, J. L. Hinrichs, P. G. Lucey
  • Meteorit . Planet . Sci .
  • 2010

Mittlefehldt, in Treatise on Geochemistry

  • D W.
  • (Pergamon, Oxford,
  • 2007
1 Excerpt

Isotopic and chemical investigations on Angra dos Reis

  • F. Tera, D. A. Papanastassiou, J. C. Huneke
  • Geochim . Cosmochim . Acta
  • 2006

Mittlefehldt, Meteorit

  • D W.
  • Planet. Sci. 40,
  • 2005
1 Excerpt

Nitrogen components in ureilites

  • U. Ott
  • Geochim . Cosmochim . Acta
  • 2003

Similar Papers

Loading similar papers…