Quote:
Originally Posted by JonClarke
Lots of rocks have presimatic jointing. They don't mean that a rock is volcanic.
On the other hand we do not see coherent volcanic rocks, graded bedding, bombs, dykes are anuthing else indicative of a proximal vent.
Jon
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A key fact is that we do see something that looks like a dyke *inside* Victoria, as discussed in the link to that previous thread.
If they had decided to visit closer to Sputnik, which would have taken less than half a day to reach before they entered Victoria, they may very well have seen evidence of a vent.
Bob Clark