The Role of Bacteria in Carbonate Formation
Author Information
Author(s): Sánchez-Román Mónica, Chandra Viswasanthi, Mulder Sebastian, Areias Camila, Reijmer John, Vahrenkamp Volker
Primary Institution: Vrije Universiteit, Amsterdam, The Netherlands
Hypothesis
How do aerobic heterotrophic bacteria alter early carbonate grains?
Conclusion
Bacteria significantly influence the formation of Mg-rich carbonates during early diagenesis.
Supporting Evidence
- Bacterial interactions with carbonate grains lead to the formation of protodolomite.
- Significant carbon isotope fractionation was observed during the experiments.
- Bacteria can enhance the precipitation of Mg-rich carbonates.
- Microbial activity alters the mineralogical and geochemical composition of carbonate sediments.
Takeaway
Bacteria can change the way certain rocks form by making them richer in magnesium, which helps in understanding how these rocks are created in nature.
Methodology
Laboratory experiments with two species of halophilic aerobic bacteria and marine carbonate grains were conducted to observe the effects on carbonate formation.
Limitations
The study primarily focuses on laboratory conditions, which may not fully replicate natural environments.
Digital Object Identifier (DOI)
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