Mercury’s Hollows: Depths, Estimation of Formation Rates, and the Nature of the Bright Haloes

David T Blewett1, Amanda C Stadermann2, Nancy L Chabot1, Brett W Denevi3, Carolyn M Ernst3, Zhiyong Xiao4 and Sean C Solomon5, (1)JHU Applied Physics Lab, Laurel, MD, United States, (2)Washington University in St Louis, Earth and Planetary Sciences, St. Louis, MO, United States, (3)JHU Applied Physics Lab, Laurel, United States, (4)China University of Geosciences, Wuhan, China, (5)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States