Re: [asa] meteorites in the geologic column

From: David Campbell <>
Date: Mon Sep 22 2008 - 14:00:20 EDT

Microscopic meteoritic material occurs here and there throughout the
geologic column, as do impact-caused microscopic objects such as
shocked quartz grains (sand with strain patterns showing a rapid
extremely high pressure event, the only known candidate being impact
of an extraterrestrial object) and tektites (bits of glass formed by
impact melting of target and impactor debris). Also, there are
impact-generated chemical signatures such as iridiumn anomalies.

More fundamentally, the argument is illogical. Meteors would be
expected to be found in the geologic column no matter what the age of
the earth. The splashes from lots of impacts model for the Flood,
while not widely advocated, is a specific young-earth model that
expects lots of traces of impactors. (There are plenty of problems
with said model, such as the 2nd law of thermodynamics, the globally
recognizable layers of impact ejecta that require enough time in
reasonably calm oceans to sink to the seafloor, evidence of effects on
terrestrial ecosystems, etc. However, the existence of a young earth
model might help promote willingness to fix the science; with a very
slight chance of also promoting thinking about the mutually
conflicting young-earth claims.)

Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"
To unsubscribe, send a message to with
"unsubscribe asa" (no quotes) as the body of the message.
Received on Mon Sep 22 14:00:48 2008

This archive was generated by hypermail 2.1.8 : Mon Sep 22 2008 - 14:00:48 EDT