Space/Science — HabitableZone

Space/Science » in reply to The (pure?) sulfate they just drilled is much more than just a crust...

Do you know they are sulfates?
jms — (archived)

I've not seen any spectra. They very well may be sulfates, it'd make sense, but I'll wait for the data.

I hadn't seen alot of the pictures you posted below (not much time to pour through raws these days) Wild stuff. The rocks Spirit is seeing lately are very interesting, I wish I had more time to look at them all.

But a couple of quick "no's". Those are not pillows. Most of the pillow forms I've seen in the field are highly metamorphosed, so I can imagine pillows where others don't. But I really don't see them here. Interesting weathering, though. It's called sphereidal weathering. I grew up camping in mountians that are full of spheroidally weathered granite. Makes some very interesting forms. When people see these big (building size) boulders they always think glacier. But it just simple weathering, which tends to attack corners and edges of joint blocks.

Lots of what appear to be vesicles, though.

No on the mid-ocean ridge. A mid ocean ridge is a huge stucture. This is a little outcrop you could have lunch on.

The layering you linked to is quite interesting, and it makes me lean towards sediment, but I'll start with eolean process first.

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