From: Marty Leipzig
To: jonny vee May-09-94 06:31:20
Subject: Flood myth question
jonny vee while keeping an eye out for the Cyclops, said to Marty Leipzig:
> jv> The second assertion, that a boat fossilized in four thousand years,
> [big, huge, gaping, festering, bleeding _Deinonychus_ sort of snip]
> Thanks, jonny. I saw this load of bilious bilge and disposed of
> it in a packet that should be hovering around in cyberland just
jv> Yeah, I saw that yesterday. Actually, though, I really would like to
jv> know a bit more about the process of fossilization, if it would not be
jv> too great a demand on your time. From your response to whatsizname, I
jv> gather that four thousand years is a bit premature....
Just a bit, like a few orders of magnitude.
"Fossilization" is really a "bag" term for preservation in the
rock record. To be more precise, one should refer to the
actual processes (plural) of preservation. These include:
mummification (preservation in arid/cold [or both] climates),
usually reserved for fairly recent sort of remains (mammoths in
permafrost, cave bears from the Pleistocene, and dodo and great
auk remains from the Pliocene). Other more typical
preservational modes are carbonization (usually for florules,
i.e. plant remains), but certain critters croaking in water and
falling to the bottom of a lake or restricted ocean in an euxinic
or anoxic environment are not bothered by scavengers and other
reducers, and are eventually "distilled" into a carbon film.
Good examples are some of the piscine remains in the Eocene
Green River Shales, ichthyosaurs from the Jurassic of Germany
and Cretaceous fish from Brazil.
Other methods are replacement and permineralization; where
there is a molecule for molecule exchange of organic remains
(carbon base) for inorganic (silica, hematite, opal, magnetite,
pyrite, etc.). This yields exquisite detail as it is a VERY
slow process (10^6's years). Such examples include the
"Petrified Forest" of the 4 corners area fame (coniferous trees
replaced by precious opal), numerous examples of pyritized
brachiopods from the Carboniferous Cincinnati Shales
(_Platystrophia ponderosa_ is a largish brachiopod and oftimes
is found completely pyritized...makes nifty geological door
Other modes of preservation include imbedment in various agents
such as tar (Pleistocene Rancho de La Brea as a classic example),
amber (Baltic insects from the Miocene) and body casts and molds by
interment in ash falls.
As for the supposed big boat that "fossilized" in a mere 4,000 years
on the slopes of a tallish mountain, just where the flying fornication
did all the water come from (and go to) that allowed this rapid mode of
fossilization on the side of a volcano? All processes of preservation
(excepting the latter inclusion cases) require copious amounts of
liquid H2O for the vehicle to carry dissolved minerals for replacement.
Or is it all just a great, huge load of bovine biogenic colluvium?
... Creationists are fossils in their own time.
--- Blue Wave/Max v2.12
* Origin: A Little Corner in Time BBS (1:106/113.0)