I might have gone with stegosaurus plates, myself. =oP Kidding.

What else ya' got? ;o)

Seriously tho', just some interesting results from Rutgers, regardless of whether or not it applies to Mars or to terrestrial geology. It's "interesting" physics.

I especially like the "wandering spikes" in some of the videos, and one where you could actually watch one spike jump up to the top of another and wobble back and forth like rubber.

Specifically, at the bottom of the page below:

http://sol.rutgers.edu/~lamarc/Razorbacks/razorwebpage4_runners.html

There is a larger version of the last movie,

http://sol.rutgers.edu/~lamarc/Razorbacks/m4-11M36H60_runner_fin.mov

and if you look in the upper right quadrant, appx the center (slightly right of center of the top right quadrant) and play the movie a few times, you can see a spike formed when one spike jumps to the top of another spike and literally wobbles back and forth like rubber before standing straight up as the full longer spike. What a bizarre effect!

I swear I'm not making it up. Watch the video a few times and you'll see what I'm talking about. I had to watch it about 10 times to make sure I wasn't imagining it, and just to watch it 'cause it was pretty cool.

How does a tower of individual sand grains behave like rubber? It's just, well, bizarre. But there you have it.