Iron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history

  title={Iron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history},
  author={Kurt O. Konhauser and Noah J. Planavsky and Dalton S Hardisty and Leslie J. Robbins and Tyler J. Warchola and Rasmus Laurvig Haugaard and Stefan V. Lalonde and Camille A. Partin and Paul B.H. Oonk and Harilaos Tsikos and Timothy W. Lyons and Andrey Bekker and Clark M. Johnson},
  journal={Earth-Science Reviews},

Anoxygenic photosynthesis linked to Neoarchean iron formations in Carajás (Brazil)

The results argue in favor of reducing conditions during IF deposition and suggest anoxygenic photosynthesis as the most plausible mechanism responsible for Fe oxidation in the Carajás Basin.

Hydrogeological constraints on the formation of Palaeoproterozoic banded iron formations

Banded iron formations are critical to track changes in Archaean to Palaeoproterozoic ocean chemistry, with deposition triggered by water column iron oxidation. Recently, however, it was suggested

Early Prosperity of Iron Bacteria at the End of the Paleoproterozoic Era

Various iron formation (IFs) document the interplay between the geosphere and the early biosphere during their co‐evolution. At the transition between the Paleo‐ and Mesoproterozoic eras, the

Products of the iron cycle on the early Earth.

Assessing the role of submarine volcanism in driving biogeochemical cycles on the early Earth

  • Geology
  • 2020
Background: Hydrothermal vents on the ocean floor have long been postulated as cradles of life on Earth, because they offer numerous geochemical niches and mineral catalysts to drive prebiotic

The deposition and significance of an Ediacaran non‐glacial iron formation

Most Neoproterozoic iron formations (NIF) are closely associated with global or near-global "Snowball Earth" glaciations. Increasingly, however, studies indicate that some NIFs show no robust



A Late Archean Sulfidic Sea Stimulated by Early Oxidative Weathering of the Continents

Findings indicate that euxinic conditions may have been common on a variety of spatial and temporal scales both before and immediately after the Paleoproterozoic rise in atmospheric oxygen, hinting at previously unexplored texture and variability in deep ocean chemistry during Earth’s early history.

Emergence of an aerobic biosphere during the Archean-Proterozoic transition: Challenges of future research

The earth system experienced a series of fundamental upheavals throughout the Archean-Paleoproterozoic transition (ca. 2500–2000 Ma). Most important were the establishment of an oxygen-rich

Nitrogen cycle in the Late Archean ferruginous ocean

Late Archean euxinic conditions before the rise of atmospheric oxygen

Life on Earth is thought to have coevolved with the chemistry of the oceans and atmosphere, and the shift from an anoxic to an oxic world across the Archean-Proterozoic boundary represents a

The Archean Nickel Famine Revisited.

Using an updated compilation, the consequences of methanogen Ni starvation in the context of evolving views of the Archean ocean-climate system and how the Ni famine may have ultimately facilitated the rise in atmospheric oxygen are reevaluate.

Widespread iron-rich conditions in the mid-Proterozoic ocean

Results indicate that ferruginous (anoxic and Fe2+-rich) conditions were both spatially and temporally extensive across diverse palaeogeographic settings in the mid-Proterozoic ocean, inviting new models for the temporal distribution of iron formations and the availability of bioessential trace elements during a critical window for eukaryotic evolution.

Proterozoic ocean redox and biogeochemical stasis

This model suggests that the oceanic Mo reservoir is extremely sensitive to perturbations in the extent of sulfidic seafloor and that the record of Mo and chromium enrichments through time is consistent with the possibility of a Mo–N colimited marine biosphere during many periods of Earth’s history.

Tracing the stepwise oxygenation of the Proterozoic ocean

A new perspective on ocean oxygenation is presented based on the authigenic accumulation of the redox-sensitive transition element molybdenum in sulphidic black shales, which reflects a greatly expanded oceanic reservoir due to oxygenation of the deep ocean and corresponding decrease in sulphide conditions in the sediments and water column.