Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Silicon isotope fractionation during microbial reduction of Fe(III)–Si gels under Archean seawater conditions and implications for iron formation genesis

Thiruchelvi R. Reddy, Xin‐Yuan Zheng, Eric Roden, Brian L. Beard, Clark M. Johnson

Geochimica et Cosmochimica Acta · 2016

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Summary

This laboratory study investigated silicon isotope fractionation during microbial reduction of iron–silica gels under geochemical conditions thought to represent the Archean eon, as suggested by the title and journal context. The work uses stable isotope analysis as a tracer to understand biological and chemical processes in ancient iron formation genesis. The findings contribute to understanding how microbial metabolic processes influenced the isotopic composition of Archean sediments.

UK applicability

This is fundamental geochemistry and palaeontology research with limited direct application to UK agricultural practice or policy. The work may inform understanding of soil mineralogy and weathering processes over geological timescales, but has no immediate relevance to UK farming systems or soil management.

Key measures

Silicon isotope ratios (δ30Si) during microbial reduction of Fe(III)–Si gels; comparison with iron formation signatures

Outcomes reported

The study examined silicon isotope fractionation patterns during microbial reduction of Fe(III)–Si gels under conditions simulating Archean seawater, to understand geochemical processes in ancient iron formation.

Theme
Measurement & metrics
Subject
Measurement methods & nutrient profiling
Study type
Research
Study design
Laboratory experiment
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Laboratory / in vitro
DOI
10.1016/j.gca.2016.06.035
Catalogue ID
BFmommplpq-uaonm0

Topic tags

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