Dark material on Vesta from the infall of carbonaceous volatile-rich material

@article{Mccord2012DarkMO,
  title={Dark material on Vesta from the infall of carbonaceous volatile-rich material},
  author={T. Mccord and J.-Y. Li and J. Combe and H. Mcsween and R. Jaumann and V. Reddy and F. Tosi and D. Williams and D. Blewett and D. Turrini and E. Palomba and C. Pieters and M. C. Sanctis and E. Ammannito and M. Capria and L. Corre and A. Longobardo and A. Nathues and D. Mittlefehldt and S. Schr{\"o}der and H. Hiesinger and A. W. Beck and F. Capaccioni and U. Carsenty and H. Keller and B. Denevi and J. Sunshine and C. Raymond and C. Russell},
  journal={Nature},
  year={2012},
  volume={491},
  pages={83-86}
}
Localized dark and bright materials, often with extremely different albedos, were recently found on Vesta’s surface. The range of albedos is among the largest observed on Solar System rocky bodies. These dark materials, often associated with craters, appear in ejecta and crater walls, and their pyroxene absorption strengths are correlated with material brightness. It was tentatively suggested that the dark material on Vesta could be either exogenic, from carbon-rich, low-velocity impactors, or… Expand

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Delivery of dark material to Vesta via carbonaceous chondritic impacts
The contamination of the surface of Vesta by impacts and the delivery of the dark material
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