Re: test questions-old topic

From: Bill Payne (
Date: Sun Mar 23 2003 - 21:54:51 EST

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    Your logic is compelling, Dave, but it might help if you would base your
    arguments on field observations of actual outcrops instead of your


    On Tue, 18 Mar 2003 19:33:29 -0700 "D. F. Siemens, Jr."
    <> writes:
    > On Mon, 17 Mar 2003 21:05:50 -0600 Bill Payne <>
    > writes:
    > in part
    > >
    > > As evidence for rapid deposition, we have bedded marine strata. In
    > > marine environments today, bioturbation will commonly destroy bedding
    > > planes in the top few inches of the bottom sediment in less than a
    > > Yet we commonly find thin-bedded, fossiliferous units.
    > >
    > I respond as a logician with interests in biology. The problem here
    > is the assumption that _all_ deposits will be disrupted, the fallacy
    > of false generalization. I can immediately think of two kind of
    > deposits that will not be. First, there are anoxic areas where
    > marine life, except for some bacteria, cannot live. Second, there
    > are benthic areas where there is little life, and what there is
    > seems to be on the surface rather than burrowing. I expect that
    > those knowledgeable in the area of marine sedimentation can provide
    > additional examples.
    > Dave

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