Re: unsorted sediment

From: Don Winterstein (
Date: Fri Sep 26 2003 - 03:35:54 EDT

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    Conglomerates are sometimes very poorly sorted. You might expect poor sorting whenever you have a very energetic process but relatively little water per rock. Turbidites are well-sorted rocks that come from high energy processes, but they formed on sea bottoms. ("Marine landslides.")

    Breccias from talus slopes can also be very poorly sorted. Any more?


      ----- Original Message -----
      From: bivalve
      Sent: Thursday, September 25, 2003 2:28 PM
      Subject: unsorted sediment

      Variants on the landslide theme, not exactly landslides, can be rather poorly sorted-e.g., brecchia due to cave collapse. Apart from things like that, I am not thinking of many options.

      The mud slurry idea has problems with the survival of organisms in it. Fine mud will clog up most organisms, which is part of why putting a dam on a river is such a good way of killing off native river-dwelling mollusks.

          Dr. David Campbell
          Old Seashells
          University of Alabama
          Biodiversity & Systematics
          Dept. Biological Sciences
          Box 870345
          Tuscaloosa, AL 35487-0345 USA

      That is Uncle Joe, taken in the masonic regalia of a Grand Exalted Periwinkle of the Mystic Order of Whelks-P.G. Wodehouse, Romance at Droitgate Spa


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