Cambrian Explosion; the great unconformity (Introduction)

by xeno6696 , Sonoran Desert, Tuesday, May 01, 2012, 03:35 (4568 days ago) @ David Turell

Another tortured explanation of the Cambrian Explosion:
> > 
> > http://www.nature.com/nature/journal/v484/n7394/full/nature10969.html?WT.ec_id=NATURE-2... 
> Another version of this theory. I've actually touched the great unconformity in the Grand canyon during a lecture by a recognized world expert on Canyon geology who was rafting with us. 750 million years of rock is absent, but is present in other parts of the world to let us recognize the absence in the canyon. The sediment formation in the cambrian as a result may offer a substrate for the development of the cambrian organisms, but the drive for the changes came from the genomes, not the sediment. 
> 
> http://www.sciencedaily.com/releases/2012/04/120418131429.htm-I won't let you be the only one to remark about this. -Good find!

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Cambrian Explosion, Chinese style - David Turell, 2011-06-29, 15:10
- Cambrian Explosion, Chinese style - Balance_Maintained, 2011-07-02, 11:05
  - Cambrian Explosion, Chinese style - David Turell, 2011-07-02, 15:12
- Cambrian Explosion, Chinese style - xeno6696, 2011-07-02, 15:45
  - Cambrian Explosion, Chinese style - David Turell, 2011-07-02, 17:44
    - Cambrian Explosion; the Gap - David Turell, 2011-11-25, 05:35
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        Cambrian Explosion; the rogues gallery - David Turell, 2011-12-17, 00:18
        Cambrian Explosion; the great unconformity - David Turell, 2012-04-18, 19:01
        Cambrian Explosion; the great unconformity - David Turell, 2012-04-30, 16:27
        Cambrian Explosion; the great unconformity - xeno6696, 2012-05-01, 03:35
        
        Cambrian Explosion; the great unconformity - dhw, 2012-05-01, 16:57
        
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- Cambrian Explosion, New discoveries - David Turell, 2013-02-27, 19:38
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        Cambrian Explosion: mutation rate - David Turell, 2013-09-14, 15:44
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        Cambrian Explosion: further commentary - David Turell, 2013-09-16, 05:45
        
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Cambrian Explosion; the great unconformity (Introduction)