Central Structure
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jb1995
There is a 3/4 circle roughly central in this shot.
Any clues as to what it might be?
Almost looks like an impact has pushed a horseshoe shape crater up.Posted
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Kitharode
moderator
in response to jb1995's comment.
Well spotted jb1995. That's quite a mysterious little horseshoe you have there. With a bit of luck JellyMonster will give your image a tweek and a rotation which might help us.
Right now I've no idea what it is or how it formed.
Posted
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jb1995
Thanks for the feedback, I only just noticed it to be honest, was just about to click finish and saw it out of the corner of my eye.
Posted
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Kitharode
moderator
My pleasure. Have you visited the full HiRise image? It's a right mess!! 😉 Haven't found your horseshoe in there yet, but it'll be in there somewhere.
There are lots of twists and turns in the area, but your horseshoe does seem to be different somehow.
Posted
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jb1995
Not seen it as yet, is it just a google job?
Posted
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jb1995
Found it
Posted
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Kitharode
moderator
Easier than that now, thanks to the tech team.
Click your image above to get to the 'image page'. Just underneath the image there is the link to the HiRise Catalogue page for the image. Scroll down to the 'Image Products' box for images (RGB non-map projected is good).
The 'Observation Toolbox' is brilliant also. Go here for more info: http://talk.planetfour.org/#/boards/BPF0000009/discussions/DPF0000e8z
Posted
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jb1995
About a quarter of the way in from the left, and about a third of the way up. I think that could be it looking at the patterns of valleys and the odd little circular bit. (On the HiRise image)
Posted
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Kitharode
moderator
Well done. All you need to do now is work out what going on !! ** 😛 **
Posted
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Kitharode
moderator
...and a bit of cross chat posting thrown in too... Hahaha.
Posted
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jb1995
Haha, yeah, why do I doubt I'll manage that 😃
It almost looks like a meteor strike at a shallow angle, maybe pushing a horseshoe shaped crater up?
Although thinking about it, that would show the other way wouldn't it, valleys as ridges and ridges as valleys and all that.Posted
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jb1995
Haha, no worries, it's all useful
Posted
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Kitharode
moderator
Just to be clear, jb. You know that light is coming in from the bottom right and that we are looking at 'spider channels' carved into the surface, yes? So the outer 'edge' of the horseshoe is a curved channel which continues to snake its way towards bottom left (on the left of the shoe).
Forgive me if you know all that - I don't know how much you know yet. 😉
Posted
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jb1995
Yep, that's what I mean in the comment above. I'm still a bit of a novice at this but yeah, I was thinking it cant be ridges.
I wonder if the rock structure underneath changes? might cause different patterns to be formed as the channels are carved out. It's the double ring sort of structure that has me stumped to be honest.Posted
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Kitharode
moderator
The rock structure is changed (by seasonal processes scraping the channels) but I'm not sure it's changing. There might be 'stuff' embedded within it that produces 'dense spots' in the area. Elsewhere (somewhere) we did discuss a "path of least resistance" idea for spider leg formation.
Maybe some of the others will add better ideas than mine. Hope to speak with you again. Food next ... Cheers.
Posted
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jb1995
Sounds like a plan. Thanks for all your help
Posted
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JellyMonster
Kitharode asked me to do this. Image has been spun through 180 and enlarged a little.
Posted
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Kitharode
moderator
Thanks JM. That takes some of the mystery out of the image. Just a curved channel methinks.
Posted
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jb1995
Thanks JM,
Doesn't look nearly as exciting up close haha.
Curved channels and bits of rocks in there by the looks of it.Posted
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Kitharode
moderator
Although, sadly, it's not a meteor strike or other such exotic feature, it's still a complex image. Always more questions than answers.
Posted
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jb1995
Yep, If only we could get up there and have a poke around the place. 😛
Posted