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Diagenetic Fate of Biogenic Soft and Hard Magnetite in Chemically Stratified Sedimentary Environments of Mamanguá Ría, Brazil

Rodelli, Daniel; Jovane, Luigi; Giorgioni, Martino; Rego, E. S.; Cornaggia, F.; Benites, M.; Cedraz, P.; Berbel, G. B. B.; Braga, E. S.; Ustra, A.; Abreu, F.; Roberts, Andrew P.


Magnetotactic bacteria (MTB) synthesize magnetite and greigite crystals under low oxygen conditions in the water column or uppermost sediment (greigite‐producing bacteria are found below the oxic‐anoxic transition). Dissolved iron and oxygen contents in local environments are known to be limiting factors for the production and preservation of biogenic magnetite. Understanding the processes that link MTB to their living environments is fundamental to reconstructing past chemical variations in...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Journal of Geophysical Research: Solid Earth
DOI: 10.1029/2018JB016576
Access Rights: Open Access


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