Proctor Crater / A Cratera Proctor

A Cratera Proctor, em Marte.

Cientistas presumem que as ondulações são compostas de areia fina (menos de 200 microns de diâmetro) ou areia fina recoberta com areia mais grossa e grânulos.

As dunas maiores são compostas de areia, provavelmente fina.

The Proctor Crater on Mars.

Scientists surmise that the ripples are composed of fine sand (less than 200 microns in diameter) or fine sand coated with coarser sand and granules.

The larger, darker are dunes composed of sand, most likely of fine size.