Miller's experiments had invalid assumption of type of atmosphere (Talk.Origins)

Claim CB035:

In Miller's experiment demonstrating the formation of complex organics from simple compounds, the atmospheric composition used was a reducing atmosphere, with no free oxygen. The early earth probably had a more oxidizing atmosphere.

Source: Watchtower Bible and Tract Society. 1985. Life--How Did It Get Here? Brooklyn, NY, pp. 40-41.

CreationWiki response:

Fine, but complex organic molecules still will not form in an oxidizing atmosphere. We know that the Earth currently has an oxidizing atmosphere, however no evidence is given that the Earth ever had a reducing or any other type of atmosphere.

First of all, these geothermal vents are known to be as hot as 380 degrees Celsius. However, even if amino acids and nucleotides formed at such high temperature they would not last long. While life does exist near these vents, their organic compounds are maintained by the internal machinery of the living cell. However, raw amino acids and nucleotides would not stand a chance.
 * Reference: Exploring the deep ocean floor: Hot springs and strange creatures
 * Reference: Why abiogenesis is impossible

This statement ignores the abundant presence of oxygen in the most ancient rocks.
 * Reference: The creation debate: oxygen -- the deathblow to life?

Talk Origins’ cited source only shows that it is theoretically possible for the earth to have had an atmosphere high in hydrogen in the past. It shows no evidence that it did.