Thermal fatigue as the origin of regolith on small asteroids

Marco Delbo (), Guy Libourel (), Justin Wilkerson, Naomi Murdoch, Patrick Michel, K. T. Ramesh, Clément Ganino, Chrystele Verati and Simone Marchi
Additional contact information
Marco Delbo: Laboratoire Lagrange, UNS-CNRS, Observatoire de la Côte d’Azur, Boulevard de l’Observatoire-CS 34229, 06304 Nice Cedex 4, France
Guy Libourel: Université de Lorraine, CRPG-CNRS, 15 Rue Notre-Dame des Pauvres, BP 20, 54501 Vandoeuvre les Nancy, France
Justin Wilkerson: Hopkins Extreme Materials Institute, Johns Hopkins University
Naomi Murdoch: Laboratoire Lagrange, UNS-CNRS, Observatoire de la Côte d’Azur, Boulevard de l’Observatoire-CS 34229, 06304 Nice Cedex 4, France
Patrick Michel: Laboratoire Lagrange, UNS-CNRS, Observatoire de la Côte d’Azur, Boulevard de l’Observatoire-CS 34229, 06304 Nice Cedex 4, France
K. T. Ramesh: Hopkins Extreme Materials Institute, Johns Hopkins University
Clément Ganino: Laboratoire Géoazur, UNS-CNRS, Observatoire de la Côte d’Azur, 250 rue Albert Einstein, Les Lucioles 1, Sophia-Antipolis, 06560 Valbonne, France
Chrystele Verati: Laboratoire Géoazur, UNS-CNRS, Observatoire de la Côte d’Azur, 250 rue Albert Einstein, Les Lucioles 1, Sophia-Antipolis, 06560 Valbonne, France
Simone Marchi: Solar System Exploration Research Virtual Institute, Institute for the Science of Exploration Targets, Southwest Research Institute

Nature, 2014, vol. 508, issue 7495, 233-236

Abstract: Thermal fatigue resulting from diurnal temperature variations is shown to be the dominant means of rock fragmentation and, consequently, regolith formation on small asteroids.

Date: 2014
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DOI: 10.1038/nature13153

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