Great work, Nick, and pass on the kudos to Doug (if I am parsing your note correctly that the image above is one of his, not a revised version of your own).
It's especially nice to see out of the crater; that hasn't been possible given the contrast settings in the raw images. I hadn't realized the outcrop was on the "low" side of the crater. I figured it would be on the high side (if it's far enough down to show up on the low rim, why doesn't go all the way around)?
Those blue-grey bright dots are intriguing. Shiny little hematite nuggets?
It will also be VERY interesting to see if the rocks are red all the way through. That would really be something new. So far all the rocks we've seen have been pretty standard dark igneous stuff underneath the dust.
But here the rocks are lighter and redder than the soil, so it'd be hard to color the rocks by dusting them.
If they are red all the way through, what then?
Am I right that it's pretty unlikely to find unweathered mafic rocks that are red? I thought you generally get red from chemical weathering (be it by the atmosphere, water, or volcanic gases). Or, you do find some inherently reddish igneous rocks, but usually the more silica-rich types, like granite, tuff, or obsidian.
Hmm, I guess there was the orange pyroclastic stuff at the Apollo 17 site that was still basically basaltic.
Either way, it sure would be a new thing to identify on Mars.
Space/Science » in reply to Blur - not the rock band...
re: bluish pebbles, red slabs, wow!
The whole thread (34 posts)
- Playing with colour in Opportunity Crater. - Warning - lots of images!
- re: Playing with colour in Opportunity Crater.
- So can you infer anything about the rocks from the filtered photos?
- Color--in the eye of the beholder.
- "What color is Mars, anyway?"
- Nasa accused of painting Mars red
- Errata!
