You will likely disagree, but thesethin spindle shaped forms could be pillows of a very non viscous lava, or bedded volcanic turbidites. I have seen one better example of more normal looking pillows, but have not yet relocated it. Overall, the subaqueous eruption scenario would seem quite plausible to me. Your comment that these are weathered forms is true, but there are not that many examples of good outcrops to be seen so far. With such different magma's, geology, and forces involved would we easily recognize subaqueous volcanics on Mars? They're not always easy to recognize on Earth either. With so much altered volcanics intermingled with sediments, I think this is a logical association. It is principally the drastic extent of the chemical alterations observed that makes me lean towards this hypothesis, not a few round weathered rocks.
Space/Science » in reply to No, that's just weathering
Non weathered example of possible flat pillows
The whole thread (41 posts)
- now there's an interesting rock
- Also, look at Peace Rock images
- jms - how are you with Hexagonal minerals?
- There's a psuedohexagonal mineral that came to mind,
- re: There's a psuedohexagonal mineral that came to mind,
- Aragonite?
- There's a psuedohexagonal mineral that came to mind,
- jms - how are you with Hexagonal minerals?
- re: now there's an interesting rock
- Is it credible that....
- What about this one.....?
- Also, look at Peace Rock images