Diversification of iron‐biomineralizing organisms during the Paleocene‐Eocene Thermal Maximum: Evidence from quantitative unmixing of magnetic signatures of …

CL Wagner, I Lascu, PC Lippert, R Egli… - Paleoceanography …, 2021 - Wiley Online Library
Conventional magnetofossils represent magnetic mineral remains of magnetotactic bacteria.
Giant magnetofossils have no known modern analog. Both conventional and giant …

Giant magnetofossils and hyperthermal events

L Chang, AP Roberts, W Williams, JDF Gerald… - Earth and Planetary …, 2012 - Elsevier
Magnetotactic bacteria biomineralize magnetic minerals with precisely controlled size,
morphology, and stoichiometry. These cosmopolitan bacteria are widely observed in aquatic …

Key signatures of magnetofossils elucidated by mutant magnetotactic bacteria and micromagnetic calculations

M Amor, J Wan, R Egli, J Carlut, C Gatel… - Journal of …, 2022 - Wiley Online Library
Magnetotactic bacteria (MTB) produce single‐stranded or multi‐stranded chains of magnetic
nanoparticles that contribute to the magnetization of sediments and rocks. Their magnetic …

Paleoenvironmental significance of magnetofossils in pelagic sediments in the equatorial Pacific Ocean before and after the Eocene/Oligocene boundary

Y Lu, D Wang, X Jiang, Z Lin, Y Yang… - Journal of Geophysical …, 2021 - Wiley Online Library
Magnetotactic bacteria (MTB), sensitive to redox status, leave fossil bacterial magnetite
(magnetofossils) in sediments. The relative contents of cuboctahedral, elongated prismatic …

Magnetofossil spike during the Paleocene‐Eocene thermal maximum: Ferromagnetic resonance, rock magnetic, and electron microscopy evidence from Ancora, New …

RE Kopp, TD Raub, D Schumann, H Vali… - …, 2007 - Wiley Online Library
Previous workers identified a magnetically anomalous clay layer deposited on the northern
United States Atlantic Coastal Plain during the Paleocene‐Eocene thermal maximum …

The identification and biogeochemical interpretation of fossil magnetotactic bacteria

RE Kopp, JL Kirschvink - Earth-Science Reviews, 2008 - Elsevier
Magnetotactic bacteria, which most commonly live within the oxic-anoxic transition zone
(OATZ) of aquatic environments, produce intracellular crystals of magnetic minerals …

Magnetofossils and Benthic Foraminifera Record Changes in Food Supply and Deoxygenation of the Coastal Marine Seafloor During the Paleocene‐Eocene Thermal …

CL Wagner, P Stassen, E Thomas… - Paleoceanography …, 2022 - Wiley Online Library
Continental shelf sediments along the northeast continental margin of North America contain
a magnetofossil‐rich interval deposited during the Paleocene‐Eocene Thermal Maximum …

Iron isotope signature of magnetofossils and oceanic biogeochemical changes through the Middle Eocene Climatic Optimum

R Havas, JF Savian, V Busigny - Geochimica et Cosmochimica Acta, 2021 - Elsevier
Magnetotactic bacteria (MTB) intracellularly precipitate magnetite (Fe 3 O 4) crystals that can
be preserved in the geological record. When MTB die, the so-called magnetofossils …

In situ magnetic identification of giant, needle-shaped magnetofossils in Paleocene–Eocene Thermal Maximum sediments

CL Wagner, R Egli, I Lascu… - Proceedings of the …, 2021 - National Acad Sciences
Near-shore marine sediments deposited during the Paleocene–Eocene Thermal Maximum
at Wilson Lake, NJ, contain abundant conventional and giant magnetofossils. We find that …

Magnetite magnetofossils record biogeochemical remanent magnetization in hydrogenetic ferromanganese crusts

W Yuan, H Zhou, Z Yang, JR Hein, Q Yang - Geology, 2020 - pubs.geoscienceworld.org
Records of natural remanent magnetization (NRM) and geomagnetic polarity reversals
preserved within ferromanganese (Fe-Mn) crusts, together with the application of fine …