>I can accept (after much debate on the Australian Fidonet Creation v
>Evolution echo) that science can date age of the Earth at 4.6 billion
>years, using the Uranium-Lead method. However, I am not so sure
>that it can date using such short ages as 5 MY using the U-Pb
>method. Does anyone know what method was used to date Glenn's
>exhibits?
>
I can giver a partial answer from my recollections of what Glenn said in
his book. However, the best person to answer it is probably Glenn.
First, I believe Glenn is quite confident about the dating of the flooding
of the Mediterranean. But I don't believe much if any evidence is
available of human artifacts which would support his thesis.
The first evidence that led to the determination that the Mediterranean had
once been dry was the discovery of evaporite deposites in drilling cores
from the Mediterranean. Evaporite is a deposit of salts of various metals
which forms only in air under certain temperature and humidity conditions.
That establishes that the Mediterranean seabed was once dry. The evaporite
deposits were found below the sea bottom, with sediments on top, and I
presume the thickness of the sediments, together with known bounds on
sedimentation rates helped establish the date of the flooding. Geologists
like to have several lines of evidence when they date things, so I presume
some additional evidence must have been available, but either I don't
remember it form the book, or Glenn didn't discuss it. In any case, the
flooding of the Mediterranean is considered pretty well established by the
geology and oceanography communities -- it was not Glenn's invention.
Bill Hamilton | Vehicle Systems Research
GM R&D Center | Warren, MI 48090-9055
810 986 1474 (voice) | 810 986 3003 (FAX)
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