HiPOD: Sunday, 28 March 2021
Pedestal Crater Development

Pedestal Crater Development
In this image, we see an approximately 500-meter crater that is fairly fresh (in geological terms), but the ejecta is already high-standing. Could this be an indication of early stage of pedestal development?

A pedestal crater is when the ejecta from an impact settles around the new crater and is more erosion-resistant than the surrounding terrain. Over time, the surrounding terrain erodes much faster than the ejecta; in fact, some pedestal craters are measured to be hundreds of meters above the surrounding area.

HiRISE has imaged many other pedestal craters before, and the ejecta isn't always symmetrical, as in this observation.

This caption is based on the original science rationale.

ID: ESP_039936_1330
date: 2 February 2015
altitude: 250 km

#Mars #science #NASA

Black & white is less than 5 km across; enhanced color is less than 1 km. For full observation details, visit the ID link.