I've heard it said that...

alcaray — 3/24/2004 6:16:58 PM (archived)

...plate techtonics never started on mars. That is, there was never a set of separate, independently-moving, crustal plates.

If true, it severely limits your choices, for cause of major topographical rearrangement.

The whole thread (37 posts)

NASA press conference title: "Opportunity Hits the Beach" - Robert - 3/23/2004 6:56:41 PM
- Exactly how many tens of millions of years ago was all this supposed to have happened? - E.P. Grondine - 3/25/2004 8:24:37 PM
- Slides from the conference - jms - 3/24/2004 2:49:48 AM
- Another version of this news from MSNBC - David F Mayer - 3/23/2004 10:32:26 PM
- Alright you geologists out there..... - Gary - 3/23/2004 9:29:43 PM
  - re: Alright you geologists out there..... - jms - 3/24/2004 2:07:41 AM
    - Hmm. A lake he says. Imagine that. (n/t) - RobVG - 3/24/2004 3:40:31 AM
  - Geologists my eye. I want to see some fossil experts going over all these photos now, if they aren't already. (n/t) - Tom Brosz - 3/24/2004 1:11:24 AM
  - Climate - Buck Galaxy - 3/23/2004 10:48:12 PM
  - It's all about the bedforms.... - dtb - 3/23/2004 10:42:43 PM
    - re: It's all about the bedforms.... and topography (wouldn't hurt). - Marcia - 3/23/2004 11:56:57 PM
      - Supports the idea of an ancient basin in Arabia Terra. - Robert Clark - 3/24/2004 7:00:23 AM
      - If this rock is as old as I think it is..... - jms - 3/24/2004 2:18:20 AM
        
        What could have changed the topography, so drastically? - alcaray - 3/24/2004 3:56:52 PM
        
        could be - jms - 3/24/2004 5:17:12 PM
        
        I've heard it said that... - alcaray - 3/24/2004 6:16:58 PM
        
        part of my new reading list: - jms - 3/24/2004 8:25:13 PM
        
        re: new magnetic anomaly map - Pete B. - 3/25/2004 3:01:10 AM
        
        Thanks Pete, interesting article (n/t) - jms - 3/25/2004 3:30:31 AM
  - re: I concur. I think some radiometric dating of the rocks & sediments is in order. (n/t) - Success_Machine - 3/23/2004 9:57:09 PM
- Sample return just became a lot more likely - dtb - 3/23/2004 8:21:47 PM
- Some still images - Robert - 3/23/2004 8:16:50 PM
- Squyres: "A habitable environment on Mars" - Robert - 3/23/2004 7:49:21 PM
- Press release with photos - Tom Brosz - 3/23/2004 7:22:50 PM
  - Thanks Tom, from one just listening in. (n/t) - jms - 3/23/2004 7:52:01 PM
- Sedimentary rock! (n/t) - Tom Brosz - 3/23/2004 7:14:35 PM
  - The rocks may have been cast in a salt flat that was alternately wet and dry. - RobVG - 3/23/2004 7:39:46 PM
  - re: Sedimentary rock! - Marcia - 3/23/2004 7:38:17 PM
    - Sea Gulls on Mars - Buck Galaxy - 3/23/2004 9:06:15 PM
      - re: I have missed seeing birds in the Martian landscape. :} - Marcia - 3/23/2004 9:32:00 PM
- Weiler: "Perhaps A Shallow, Salty Sea" - dtb - 3/23/2004 7:13:34 PM
- You sure don't get beaches from water percolating up through the soil (n/t) - Tom Brosz - 3/23/2004 7:04:48 PM
- re: NASA press conference title: "Opportunity Hits the Beach" - Marcia - 3/23/2004 7:04:21 PM
  - Nice picture Marcia, I'd love to see the stereo pair of this one! - jms - 3/23/2004 7:47:15 PM
    - re: Nice picture Marcia, I'd love to see the stereo pair of this one! - Marcia - 3/23/2004 10:02:48 PM
      - Another nice shot! Good eye, too! - jms - 3/24/2004 1:47:59 AM
- Screen cap title - Robert - 3/23/2004 7:03:48 PM

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