Evidence for the Interior Evolution of Ceres from Geologic Analysis of Fractures
PUBLICATIONS Geophysical Research Letters RESEARCH LETTER Evidence for the Interior Evolution of Ceres 10.1002/2017GL075086 from Geologic Analysis of Fractures Key Points: J. E. C. Scully1 , D. L. Buczkowski2 , N. Schmedemann3 , C. A. Raymond1 , J. C. Castillo-Rogez1, • ≥ We identify all 1 km wide linear 4 5 1 ’ 6 7 8 features outside impact craters: most S. D. King , M. T. Bland , A. I. Ermakov ,D.P.OBrien , S. Marchi , A. Longobardo , 9 10 11 are secondary crater chains and there C. T. Russell ,R.R.Fu , and M. Neveu is one set of pit chains • Pit chains are the surface expression of 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA, 2The Johns Hopkins University subsurface fractures, and they reveal Applied Physics Laboratory, Laurel, MD, USA, 3Institute of Geological Sciences, Freie Universität Berlin, Berlin, Germany, that the localized outer layer is thicker 4 5 ’ Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA, U.S. Geological than Ceres s average 6 7 • We propose that a region of upwelling Survey, Astrogeology Science Center, Flagstaff, AZ, USA, Planetary Science Institute, Tucson, AZ, USA, Southwest Research 8 9 material, resulting from convection/ Institute, Boulder, CO, USA, INAF Istituto di Astrofisica e Planetologia Spaziali (IAPS), Rome, Italy, Department of Earth, diapirism, formed the pit chains, and Planetary, and Space Science, University of California, Los Angeles, CA, USA, 10Lamont-Doherty Earth Observatory, we derive its characteristics Columbia University, Palisades, NY, USA, 11School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA Supporting Information: • Supporting Information S1 Abstract Ceres is the largest asteroid belt object, and the Dawn spacecraft observed Ceres since 2015.
[Show full text]