Matijevic Hill first survey, Sol 3057 - 3152 |
Matijevic Hill first survey, Sol 3057 - 3152 |
Aug 31 2012, 09:19 AM
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Oooooh, you're pretty...
Might be here a while, you think? Edit: better colours on this amended version, I think... http://twitpic.com/apn9s1/full -------------------- |
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Sep 4 2012, 08:51 PM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Well I'm even less of a geologist than you obviously are but I really like your suggestion. I'd love those things to be garnets - my favourite mineral. However, don't you need huge tectonic movements to produce highly metamorphosed rocks like schist? In favour of the idea: at least schists are hard enough to produce upstanding outcrops, whereas I'd be surprised if eroding clay beds would be.
I expect these rocks to be the progenitors of the clays but not the clays themselves. My reason? A little farther on there is a crater formed into Cape York which CRISM shows to be surrounded by clays (weathered ejecta?) although the interior of the crater appears relatively clay-free. The Gale crater clays likely have a completely different story to tell. It's an old, old world. |
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