The extreme energy of ground-hugging debris surges emanating from impact events often results in a distinctive V-shaped surface expression where the deposits are relatively fresh. Here we see such striations oriented with their apices pointing toward a fresh, unnamed impact crater just northwest of Jules Verne Y in the farside Highlands. The Featured Image highlights an area where this effect, which results from low-angle secondary impacts of ejected debris, seems to have been accentuated by local topography.
A wider field of view of the same NAC frame gives context to the Featured Image location.
Even in the 100 m/pixel WAC mosaic, scours from interacting ejecta and terrain are clearly visible. To the northeast of the fresh crater can be seen additional scours that are oriented in a southwesterly to northeasterly direction, away from the impact site. Click here for the full NAC frame. Other examples of recent deposits can be found In the Wake of Giordano Bruno, Ejecta Starburst, and Action Shot.
Posted by James Ashley on November 01, 2012 09:00 UTC.