Is it windblown or not (#2)?

[ 2 ] Comments

A Piece of Mars: This 0.93×1.25 km (0.57×0.78 mi) scene shows what I’m starting to think are windblown features. I posted something similar to this once before, from a location not that far from here. In this one region of Mars there are parallel lines cut into the tops of hills. A geologist would first presume they were exposed, tilted layers. But the regularity of their spacing (especially when you zoom in) is a bit unusual, and suggests some sort of self-organization (like windblown ripples). And then the questions begin: why just in this spot on Mars? what’s unusual about the rocks (or the wind) here? I still have no good answers. (HiRISE ESP_052386_1565 NASA/JPL/Univ. of Arizona)

2 Responses to Is it windblown or not (#2)?

  1. Kjell H Martinsen says:

    Interesting stretch marks, or should I say the opposite stretch marks!
    It seems like movement in the subsurface substance gives “wrinkles” on the surface. Looks like whale skin when studying it up close.
    The circular structures appear to be fixed to subsurface “anchors”, while the “softer” surroundings appear to move by expanding…and thereby creating what looks like wind drifts.
    Is there a chance there is a subsurface “soft” substance like ice or other semi-liquid matter creating this “familiar” pattern?

    • lfenton says:

      It’s unlikely there’s ice here, as it’s near the equator. The circular structures are probably highly eroded craters. Otherwise I’m not entirely sure how this surface texture is made.

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