This image shows the western rim of a well-preserved 8.5-kilometer (about 5 miles) diameter impact crater.
The wall features a slumped terrace that extends all the way around the crater diameter (the
adjacent image show the rest of the terrace). This slumped terrace, a result of the crater formation process, gives the crater a concentric ringed appearance.
Terraces are an expected feature in Martian craters of this size or larger, as the material strength of the surface is overcome by the force of all-of-the-sudden-missing mass. Blocks of rock slump down the steep crater walls and slide inward (
by contrast, terraces in smaller craters are often the product of an impact of an object into a surface with layers of differing material strength).
ID:
ESP_035702_2270date: 9 March 2014
altitude: 297 km
https://uahirise.org/hipod/ESP_035702_2270
NASA/JPL-Caltech/UArizona
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