|Tracy P. Hamilton
Joined: May 2006
|Quote (paragwinn @ May 19 2011,18:16)|
From Casey's reply:
|The question is whether such oxidation inhibitors or pH buffers were available on the early Earth. A pro-ID chemist critiqued this paper privately to me as follows:|
Watch out, Casey has his super-secret research team on the case!
|4 papers focus on the earth's post-biotic atmosphere (i.e. the atmosphere after life already existed on earth) and were irrelevant to investigating the nature of earth's atmosphere prior to the origin of life. (Catling et al. 2002, Kasting and Siefert 2002, Pavlov et al. 2001, Wolf and Toon 2010.) |
Kasting and Siefert 2002
|Thus, microorganisms have probably determined|
the basic composition of Earth’s
atmosphere since the origin of life. During
the first half of Earth’s history, this may have
resulted in a planet that looked much like
Saturn’s moon Titan (Fig. 2).2 During the
latter half of Earth’s history, microorganisms
created the breathable, O2-rich air and clear
blue skies that we enjoy today. Atmospheric
evolution on an inhabited planet is determined
largely by its microbial populations.
Translation: the atmosphere was not oxidizing until 2.3 Gya, hence it was reducing before, verily back to to abiogenetic regimes.
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