PSP_010329_1525_1.0x
A Piece of Mars: In a recent post (Dunes in a Colorful Hole), I showed some dunes crawling over layered terrain, with a view that looked a lot like some desert regions of Earth. Here’s another spot on Mars (0.95×1.1 km, 0.59×0.68 mi) showing yet more beautiful layers with dunes filling up the valleys. Part of what makes it seem Earth-like is the lack of craters, although if you go looking you’ll see there are some there. It’s hard to tell from here, but this whole scene is inside an old fluvial channel. The layers are thought to be lake deposits from when the river dammed up, ages ago. Since then the wind has taken over, taking apart the layers one grain at a time, and then building up dunes with some of those grains. (HiRISE PSP_010329_1525, NASA/JPL/Univ. of Arizona)

Comments (2)

  1. hi,
    big fan from your blog.
    maybe you have seen this, if not: https://www.youtube.com/watch?v=bTFoaycB8ps
    nice 3d rendering from finlands artist jan fröjdman.
    warm regards (from belgium),
    geert

    1. Yes, I’ve seen it. It’s really beautiful!

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