At 03:10 PM 1/21/00 +0900, Wayne Dawson wrote:
>
>I remember reading that that YEC insists that fossilization can occur
>"within 100 years". It seems a little toooooooo fast. What exactly
>do they mean by "fossilization" in this context.
>
>Is this in reference to bone and other calcium based materials, as
>opposed to say cartilage or other even softer materials?
>
>Would that correspond to the most "ideal" imagined conditions
>(essentially only possible in a laboratory)?
>
>Are there any real facts at all behind this claim?
I don't know of any specific cases of fossilization occurring in less than
100 years, if you mean by that total molecular replacement. However, it
does occur relatively fast geologically speaking. And if conditions are
correct concretions can form around the dead animals ensuring their
fossilization.
"Among the most interesting occurrences of fish-bearing concretions are
those that are being found in Recent or sub-Recent marine clays in various
places along the coasts of Greenland and northern Canada. Figure 5 shows
one of these specimens from the American Museum which Dr. Scaeffer kindly
permitted the writer to have photographed. The concretions occur in marine
clays which apparently were raised above sea level by the isostatic rebound
that followed the melting of the Pleistocene ice cap. The fact that
concretions have already been developed in these very young clays seems
significant." ~ L. G. Weeks, "Environment and Mode of Origin and Facies
Relationships of Carbonate Concretions in Shales," Journal of Sedimentary
Petrology, 23(1953):3:162-173, p. 168
**
"Conversely, anything which lowers the alkalinity of the waters or even
throws the environment into the acid range changes the balace in favor of
holding the lime in solution. Sea waters are normally alkaline, with a pH
ranging from about 7.5 to 8.5. A neutral solution has a pH of 7.0 and
decreasingly lower values represent increasing acidity. Normally, calcium
carbonate deposition requires a pH at least as high as 7.5." ~ L. G. Weeks,
"Environment and Mode of Origin and Facies Relationships of Carbonate
Concretions in Shales," Journal of Sedimentary Petrology,
23(1953):3:162-173, p. 171
**
"There are probably few stagnant bottom environments where there is not
some limited decomposition of organic matter, even if anaerobic.
Bacteriologists and biochemists tell us that where there is anaerobic
decompositoin there is a localized concentration of ammonia or amines.
This would markedly increase the pH; it would be sufficient, no doubt, to
precipitate the bicarbonate in solution as carbonate. One of the tests
used by bacteriologists to determine if the bacterial process is
progressing is to see if ammonia is evolving." ~ L. G. Weeks, "Environment
and Mode of Origin and Facies Relationships of Carbonate Concretions in
Shales," Journal of Sedimentary Petrology, 23(1953):3:162-173, p. 171
"The preservation of soft tissue by mineralization depends on a critical
balance between decay and precipitation. Some decay is required to drive
the process; too much leads to a loss of information. Subcellular details
of the most labile tissues can only be replicated with a high degree of
fidelity where mineralization is rapid relative to decay (the rate
depending on a range of controls including concentration and oxidation
state of the mineral ions, size and type of organic substrate, and pH)." ~
D. E. G. Briggs et al, "Phosphatization of soft-tissue in Experiments and
Fossils," Journal of the Geological Society, London, 150(1993):1035-1038,
p. 1035
glenn
Foundation, Fall and Flood
Adam, Apes and Anthropology
http://www.flash.net/~mortongr/dmd.htm
Lots of information on creation/evolution
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