Vesta's north pole quadrangle Av-1 (Albana): Geologic map and the nature of the south polar basin antipodes

摘要: As part of systematic global mapping Vesta using data returned by the Dawn spacecraft, we have produced a geologic map north pole quadrangle, Av-1 Albana. Extensive seasonal shadows were present in polar region at time observations, limiting ability to morphological features and employ color or spectral for determination composition. The major recognizable units include ancient cratered highlands younger crater-related (undivided ejecta, mass-wasting material on crater floors). antipode Vesta’s large southern impact basins, Rheasilvia Veneneia, lie within near quadrangle. Therefore it is particular interest search evidence kind that are found basin antipodes other planetary bodies. Albedo markings known as lunar swirls correlated with presence crustal magnetic anomalies Moon, but lighting conditions preclude recognition such albedo images basin. ‘‘Hilly lineated terrain,’’ basins Moon Mercury, not Veneneia antipodes. We identified small-scale linear depressions may be related increased fracturing antipodal areas, consistent impact-induced stresses (Buczkowski, D. et al. [2012b]. Analysis scale troughs correlation model giant into