Space/Science » in reply to re: Pillow lava in Victoria crater? Nope.

Pillow lava and a sedimentary layer.

Robert Clark — 10/19/2006 4:06:22 PM (archived)

Here is an image of pillow lava of a more flattened appearance that may be a closer match to that seen in the Beacon Hill image:

"Pillow basalt (upper half of photo) indicate that some lava flows advanced into water. The light colored layer is lake sediments. The presence of lake sediments indicate a reasonable pause between the eruption that formed hyaloclastite and the emplacement of the pillow lava. The reddish-layered deposit in front of the volcanologist is hyaloclastite, a type of pyroclastic rock that from when lava and water interact."
http://volcano.und.edu/vwdocs/volc_images/australia/monaro.html

This also shows a thin, white sedimentary layer below the pillow lava. This may be analogous to some of the thin white layers seen in Victoria crater:

Re: A volcanic dike in Victoria crater?
http://uplink.space.com/showthreaded.php?Cat=&Board=sciastro&Number=594101

and

Victoria's Stratigraphy.
http://www.unmannedspaceflight.com/index.php?showtopic=3281&st=90&p=72366&#entry72366

Hyaloclastite is also seen in association with the pillow lava and the sedimentary layer. Perhaps mini-TES or APXS spectra could be taken to determine if the rock in these outcrops match that of hyaloclastite.

Bob Clark

Log in or register to post.

The whole thread (54 posts)

• A volcanic crater in Meridiani, Mars. - Robert Clark - 10/3/2006 5:51:32 PM
  • An Impact Origin for Crater Lake, Oregon - dtb - 10/23/2006 5:03:01 PM
    • re: An Impact Origin for Crater Lake, Oregon - Robert Clark - 10/23/2006 8:24:52 PM
  • Columnar jointing in Victoria crater? - Robert Clark - 10/18/2006 11:30:20 PM
    • They don't appear to be columnar joints to me. - podrock - 10/19/2006 6:00:28 AM
      • re: They don't appear to be columnar joints to me. - Robert Clark - 10/19/2006 11:14:05 AM
  • Pillow lava in Victoria crater? - Robert Clark - 10/15/2006 4:42:15 PM
    • re: Pillow lava in Victoria crater? Nope. - podrock - 10/16/2006 3:34:45 AM
      • Pillow lava and a sedimentary layer. - Robert Clark - 10/19/2006 4:06:22 PM
        • re: Pillow lava and a sedimentary layer. - Robert Clark - 10/23/2006 2:23:12 PM
          • All Cats Are Black - nick hoffman - 10/23/2006 2:34:36 PM
            • re: All Cats Are Black - Robert Clark - 10/23/2006 5:33:57 PM
  • Ignimbrites at Victoria crater? - Robert Clark - 10/9/2006 10:43:39 PM
  • A volcanic dike in Victoria crater? - Robert Clark - 10/9/2006 9:24:22 PM
  • Wow, look at the crater in 3-D! - Robert Clark - 10/7/2006 10:31:50 PM
    • A volcanic fissure at Victoria crater? - Robert Clark - 10/24/2006 3:26:46 PM
      • re: A volcanic fissure at Victoria crater? - Robert Clark - 10/26/2006 4:05:18 PM
  • No, it's not volcanic. - podrock - 10/7/2006 3:22:45 AM
  • Just plain silly - Donald - 10/5/2006 1:21:20 AM
    • A volcanic ash origin for the Meridiani bedrock has been proposed. - Robert Clark - 10/5/2006 12:29:28 PM
      • the sequence - podrock - 10/7/2006 3:34:23 AM
      • Robert... - Donald - 10/5/2006 12:50:06 PM
        • Victoria crater. - Robert Clark - 10/5/2006 3:27:13 PM
          • re: Victoria crater. - Michael Gmirkin - 10/6/2006 8:00:08 PM
            • Oh man... - azstrummer - 10/9/2006 11:02:06 PM
            • .......?......!....... - podrock - 10/7/2006 3:17:12 AM
              • If he is serious, it's time to bring out the bogosity meter. - Jacob Samorodin - 10/8/2006 6:21:02 PM
                • Thunderbolts cultists - Adam - 10/9/2006 4:13:50 AM
          • re: Victoria crater. - Donald - 10/6/2006 1:16:58 PM
  • Sorry, Bob - nick hoffman - 10/3/2006 11:32:57 PM
    • re: Sorry, Bob - EP. - 10/14/2006 4:06:50 PM
      • Actually, I'd like it to be MUD flows even better. (n/t) - Robert Clark - 10/15/2006 4:33:29 PM
    • Crater Lake - dtb - 10/4/2006 4:21:32 AM
      • re: Crater Lake - Robert Clark - 10/4/2006 12:22:47 PM
        • Deep lakes - Laurie Street - 10/5/2006 3:49:36 PM
        • re: Crater Lake - dtb - 10/4/2006 4:59:58 PM
          • re: Crater Lake - Robert Clark - 10/4/2006 8:58:06 PM
            • You can see the bottom of the lake in a lot of places - alcaray - 10/4/2006 11:56:26 PM
              • I can top that - here's the WHOLE lakebed - nick hoffman - 10/7/2006 10:48:48 PM
                • very nice - alcaray - 10/8/2006 12:12:10 AM
                  • re: lighntning... - nick hoffman - 10/8/2006 12:46:19 PM
                    • as in... - alcaray - 10/8/2006 4:17:31 PM
                      • ZAP ! - podrock - 10/9/2006 4:48:47 AM
                  • the best... - podrock - 10/8/2006 3:37:00 AM
            • re: Crater Lake - dtb - 10/4/2006 9:26:41 PM
              • re: Crater Lake - Robert Clark - 10/4/2006 11:45:28 PM
                • Let's try this in simple steps, Bob - nick hoffman - 10/7/2006 11:02:22 PM
                  • Mount Mazama is *no longer* a mountain. - Robert Clark - 10/7/2006 11:16:45 PM
                    • re: Mount Mazama is *no longer* a mountain. - SDG - 10/19/2006 7:10:53 PM
                    • I played in snow on the top of it, a couple of summers ago. - alcaray - 10/8/2006 12:16:23 AM
                      • re: I played in snow on the top of it, a couple of summers ago. - Robert Clark - 10/8/2006 12:43:10 AM
                        • maybe, I don't know (though Nick's elevation map was pretty convincing) - alcaray - 10/8/2006 11:25:48 PM
        • re: Crater Lake - Robert Clark - 10/4/2006 4:24:22 PM
    • Congratulations, Nick: Undercutting of the rim - E.P. - 10/4/2006 12:26:58 AM