This 3-D image on Unmannedspaceflight.com shows what could be columnar joints, though degraded, in the right center of the image:
Duck Bay, Scouting the rim.
http://www.unmannedspaceflight.com/index.php?showtopic=3257&hl=anaglyph&st=379
Compare to the columnar joints here:
Figure 1. Columnar joints in the Traveler Rhyolite. Regularly spaced joints like these developed as the ash flow cooled slowly, causing it to contract. These are seen in a longitudinal view showing the length of the columns to be about a meter. On the upper surface, the columns are nearly hexagonal (like a honeycomb) in cross section.
http://www.maine.gov/doc/nrimc/mgs/explore/bedrock/sites/may00-1.htm
And this shows columnar joints in association with pillow lava:
Columbia River Gorge
http://c3po.barnesos.net/homepage/lpl/fieldtrips/CRB/jason/ColumbiaGorge.html
The possibilility of finding columnar joints and pillow lava on Mars was examined in this report:
THE FORMATION OF COLUMNAR JOINTS ON EARTH AND MARS.
M.P. Milazzo, L.P. Keszthelyi, A.S. McEwen, and W. Jaeger ,
Lunar and Planetary Lab., University of Arizona, Tucson, AZ. ****@pirlmail.lpl.arizona.edu
http://www.lpi.usra.edu/meetings/lpsc2003/pdf/2120.pdf
Bob Clark
Space/Science » in reply to A volcanic crater in Meridiani, Mars.
Columnar jointing in Victoria crater?
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