[continued from previous message]   
      
   have yet to see any clay beds, which you would expect to see in a lacustrine   
   deposit.  even if the clay beds had worn away, there should still be clay in   
   the soil.  Unfortunately for that scenario, the microscpic images taken so   
   far of the trench at the opportunity site appear to indicate a sandy soil.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)