Crater Lake, Oregon is a particularly poor analogue for any putative volcanic origin for Victoria Crater, btw.
Crater Lake is _not_ a hole in an otherwise flat-as-a-pancake plain, but is quite clearly a steep-sided mountain with its top cut off and a hole scooped out in the middle of it. The lake surface is a few thousand feet above the ground level outside of the mountain. Not uncommon for calderas, certainly not for ones in the size class of a few km in diameter (vs the giant resurgent calderas like Yellowstone, where the form is more subtle and with proportionally much less vertical relief).
You would at least look merely confused as opposed to breathtakingly crazy if you suggested that Victoria was a maar. They at least can be the right size and are reasonably flat, but still not as good a match for Victoria as a good old impact crater. Or maybe an old Martian nuclear test site.
Not to mention that volcanoes are typically composed of volcanic rock......
Space/Science » in reply to Sorry, Bob
Crater Lake
The whole thread (54 posts)
- A volcanic crater in Meridiani, Mars.
- An Impact Origin for Crater Lake, Oregon
- Columnar jointing in Victoria crater?
- Pillow lava in Victoria crater?
- Ignimbrites at Victoria crater?
- A volcanic dike in Victoria crater?
- Wow, look at the crater in 3-D!
- No, it's not volcanic.
- Just plain silly
- Sorry, Bob