Anoxic and iron-rich (ferruginous) conditions prevailed in the ocean under the low-oxygen
atmosphere that occurred through most of the Archean Eon. While euxinic conditions (ie …

The cycling of iron (Fe) is often closely linked with that of carbon, nitrogen, phosphorus and
manganese. Therefore, alterations in the Fe cycle may be indicative of concurrent overall …

It is generally accepted that photosynthetic marine planktonic bacteria were responsible for
the oxidation of dissolved ferrous iron (Fe (II)) and the subsequent deposition of iron …

Redox conditions in the marine realm prior to the Great Oxidation Event (GOE;∼ 2.46–2.32
Ga ago), during which the atmospheric oxygen level rose dramatically for the first time, are …

Understanding the origin and evolution of life on Earth and potentially other planets in our
solar system is of fundamental interest for humanity. For the longest time in Earth's history …

Examination of stable Fe isotopes is a powerful tool to explore Fe cycling in a range of
environments. However, the isotopic fractionation of Fe in acid mine drainage (AMD) has …

Sunlight drives phototrophic metabolism, which affects redox conditions and produces
substrates for nonphototrophs. These environmental parameters fluctuate daily due to …

Abstract In the Neoproterozoic Era there was widespread deposition of iron formations in
close association with global or near glaciations. These 'Snowball Earth'glaciations likely …

Deep‐sea hydrothermal systems provide ideal conditions for prebiotic reactions and ancient
metabolic pathways and, therefore, might have played a pivotal role in the emergence of life …

There is growing evidence from Mo and Fe stable isotope tracers that shallow-water
sediments of the 2.95 Ga Mozaan Group (Pongola Supergroup) in South Africa were …