A Streamlined Island in Athabasca Valles On Mars
A Streamlined Island in Athabasca Valles
NASA
This image completes a mosaic of images covering a collection of streamlined islands in Athabasca Valles.
Streamlined islands form by a rapid erosive flow (catastrophic flooding) around an obstacle such as a resistant rock outcrop or surface armored by impact ejecta.
Examination of the margins of the islands can show evidence of terraces as in this image. Each terrace may indicate a different flow event or flood level, and can be used to reconstruct the history of flood events.
ID: ESP_028519_1895
date: 26 August 2012
altitude: 277 km
https://uahirise.org/hipod/ESP_028519_1895NASA/JPL-Caltech/UArizona
