Journal of Geophysical Research: Planets

  1. Regular Articles

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    2. Regular Articles
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      Mass-wasting features and processes in Vesta's south polar basin Rheasilvia (pages 2279–2294)

      Katharina A. Otto, Ralf Jaumann, Katrin Krohn, Klaus-Dieter Matz, Frank Preusker, Thomas Roatsch, Paul Schenk, Frank Scholten, Katrin Stephan, Carol A. Raymond and Christopher T. Russell

      Version of Record online: 5 NOV 2013 | DOI: 10.1002/2013JE004333

      Key Points

      • Characterization and mapping of mass wasting features in the Rheasilvia region
      • Description of mass wasting prosses in Vesta's low gravity environment
      • Comparison of mass wasting features with related observations and investigations
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      Vesta, vestoids, and the HED meteorites: Interconnections and differences based on Dawn Framing Camera observations (pages 1991–2003)

      B. J. Buratti, P. A. Dalba, M. D. Hicks, V. Reddy, M. V. Sykes, T. B. McCord, D. P. O'Brien, C. M. Pieters, T. H. Prettyman, L. A. McFadden, Andreas Nathues, Lucille Le Corre, S. Marchi, Carol Raymond and Chris Russell

      Version of Record online: 3 OCT 2013 | DOI: 10.1002/jgre.20152

      Key Points

      • Differences in the HEDs, V-types, and Vesta are due mostly to particle size
      • The Rheasilvia basin is the source of most vestoids and HED meteorites
      • The Rheasilvia basin provides a view into a differentiated asteroid
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      Antipodal terrains created by the Rheasilvia basin forming impact on asteroid 4 Vesta (pages 1821–1834)

      T. J. Bowling, B. C. Johnson, H. J. Melosh, B. A. Ivanov, D. P. O'Brien, R. Gaskell and S. Marchi

      Version of Record online: 18 SEP 2013 | DOI: 10.1002/jgre.20123

      Key Points

      • The Rheasiliva forming impact may have disrupted terrain at its antipode
      • Impact modeling predicts significant deformation at and near the impact antipode
      • Observations reveal high topography and a lack of small craters at the antipode
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      Two-dimensional numerical modeling of the Rheasilvia impact formation (pages 1545–1557)

      B. A. Ivanov and H. J. Melosh

      Version of Record online: 31 JUL 2013 | DOI: 10.1002/jgre.20108

      Key Points

      • The numerical model is fitted to reproduce Rheasilvia crater size and shape
      • We estimate shock decay, escaped mass, and excavation depth
      • We analyze the Rheasilvia crater formation over the older Veneneia basin
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      Composition of the Rheasilvia basin, a window into Vesta's interior (pages 335–346)

      Harry Y. McSween, Eleonora Ammannito, Vishnu Reddy, Thomas H. Prettyman, Andrew W. Beck, M. Cristina De Sanctis, Andreas Nathues, Lucille Le Corre, David P. O'Brien, Naoyuki Yamashita, Timothy J. McCoy, David W. Mittlefehldt, Michael J. Toplis, Paul Schenk, Ernesto Palomba, Diego Turrini, Federico Tosi, Francesca Zambon, Andrea Longobardo, Fabrizio Capaccioni, Carol A. Raymond and Christopher T. Russell

      Version of Record online: 28 FEB 2013 | DOI: 10.1002/jgre.20057

      Key Points

      • Excavation of Rheasilvia has exposed Vesta's mantle
      • Mantle consists of diogenite
      • No olivine has been detected