Morphological Variation of Magnetofossils from the Paleocene-Eocene Thermal Maximum: Measurement and Paleoenvironmental Implications

CL Wagner - 2021 - search.proquest.com
Magnetotactic bacteria (MTB) biomineralize iron nanoparticles of magnetite or greigite.
These crystals vary in shape (eg., bullet-shaped, cuboctahedra, or prismatic) and size with …

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 …

Gigantism in unique biogenic magnetite at the Paleocene–Eocene Thermal Maximum

D Schumann, TD Raub, RE Kopp… - Proceedings of the …, 2008 - National Acad Sciences
We report the discovery of exceptionally large biogenic magnetite crystals in clay-rich
sediments spanning the Paleocene–Eocene Thermal Maximum (PETM) in a borehole at …

[PDF][PDF] Occurrence of gigantic biogenic magnetite during the Paleocene-Eocene Thermal Maximum

D Schumann, TD Raub… - Geophysical …, 2009 - meetingorganizer.copernicus.org
The Paleocene-Eocene Thermal Maximum (PETM) is one of the most severe climatic events
of the Cenozoic Era. A massive injection of light carbon into the oceans and atmosphere …

Rock magnetic properties of uncultivated magnetotactic bacteria and paleo-redox changes across the Paleocene-Eocene boundary, New Jersey Coastal Plain

AP Chen - 2022 - figshare.mq.edu.au
Magnetotactic bacteria (MTB) can biosynthesize ferrimagnetic magnetite (Fe₃O₄) and/or
greigite (Fe₃S₄) nanocrystals. Their ubiquitous presence in oxygen-stratified …

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 …

The biomineralization and fossilization of magnetotactic bacteria: Insights from experimental and field studies

Y Pan, J LI, N Menguy, C Deng… - AGU Fall Meeting …, 2015 - ui.adsabs.harvard.edu
Magnetotactic bacteria (MTB) are widespread prokaryotes which can navigate along the
Earth's magnetic field lines and produce tens to hundreds of nanocrystals of magnetite …

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 …

Iron‐biomineralizing organelle in magnetotactic bacteria: function, synthesis and preservation in ancient rock samples

M Amor, FP Mathon, CL Monteil… - Environmental …, 2020 - Wiley Online Library
Magnetotactic bacteria (MTB) are ubiquitous aquatic microorganisms that incorporate iron
from their environment to synthesize intracellular nanoparticles of magnetite (Fe3O4) or …

Unravelling the magnetic signatures of magnetofossils from mutant magnetotactic bacteria

M Amor, R Egli, J Wan, J Carlut… - AGU Fall Meeting …, 2022 - ui.adsabs.harvard.edu
Abstract Magnetite (Fe3O4) is a ubiquitous iron oxide found in sediments and sedimentary
rocks. It is a major carrier of sediment and rock magnetization, and is used for numerous …