Generations of wind-blown landscapes
Big dunes and little dunes
November 12, 2012And the wind blew on
November 25, 2012
A piece of Mars: Some places on Mars highlight just how effective the wind is at sculpting the surface. This is a good example. Dark and light stripes on the right show not one but two successive influxes of sand: the light dunes formed first, then were eroded, and finally dark sand invaded the area. Some of it got stuck in the troughs between the older dunes. Bright streaks behind craters show that the dark sand blew in from the west-southwest. (HiRISE ESP_028603_1765)
