Exposed inclusions or fallback? A closer look at Bennu's weathered boulders
Abstract
On Bennu, cobbles and pebbles often appear perched on boulder surfaces in orientations that exhibit no alignment with the underlying boulder texture. We have interpreted their origin as either (a) inclusions revealed by weathering over geological timescales or (b) externally sourced cobbles/pebbles that have settled upon the boulder surface, guided by Bennu's low gravity. We outline a classification scheme to distinguish the two broad categories and present examples from the suite of PolyCam and MapCam images.
- Publication:
-
EPSC-DPS Joint Meeting 2019
- Pub Date:
- September 2019
- Bibcode:
- 2019EPSC...13..105R