[HTML][HTML] Bacterial magnetosome and its potential application

L Yan, H Da, S Zhang, VM López, W Wang - Microbiological Research, 2017‏ - Elsevier
Bacterial magnetosome, synthetized by magnetosome-producing microorganisms including
magnetotactic bacteria (MTB) and some non-magnetotactic bacteria (Non-MTB), is a new …

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 …

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 …

Evaluating biogenicity on the geological record with synchrotron-based techniques

F Callefo, L Maldanis, VC Teixeira… - Frontiers in …, 2019‏ - frontiersin.org
The biogenicity problem of geological materials is one of the most challenging ones in the
field of paleo and astrobiology. As one goes deeper in time, the traces of life become feeble …

Paleoenvironmental controls on the abundances of magnetofossils in the southwestern Iberian margin

K He, X Zhao, Z Jiang, S Li - Journal of Geophysical Research …, 2024‏ - Wiley Online Library
Magnetofossils are nanosized magnetic fossil remnants of magnetotactic bacteria (MTB) that
are widely distributed in marine and freshwater sediments. Past studies have revealed that …

Authigenic magnetite formation from goethite and hematite and chemical remanent magnetization acquisition

JL Till, N Nowaczyk - Geophysical Journal International, 2018‏ - academic.oup.com
The iron oxyhydroxide goethite is unstable at elevated temperatures and can transform to
magnetite under reducing conditions. In this study, various heating experiments were …

Magnetic properties of plant ashes and their influence on magnetic signatures of fire in soils

JL Till, B Moskowitz, SW Poulton - Frontiers in Earth Science, 2021‏ - frontiersin.org
Fires are an integral part of many terrestrial ecosystems and have a strong impact on soil
properties. While reports of topsoil magnetic enhancement after fires vary widely, recent …

Influence of Seasonal Post‐Depositional Processes on the Remanent Magnetization in Varved Sediments From Glacial Lake Ojibway (Canada)

ÉGH Philippe, G St‐Onge, JP Valet… - Geochemistry …, 2023‏ - Wiley Online Library
The natural remanent magnetization (NRM) of high sedimentation rate sediments provides
significant information about paleomagnetic secular variation of the Earth's magnetic field …

Enhanced magnetization of the Marlboro Clay as a product of soil pyrogenesis at the Paleocene–Eocene boundary?

DV Kent, L Lanci, H Wang, JD Wright - Earth and Planetary Science Letters, 2017‏ - Elsevier
Abstract The kaolinite-rich Marlboro Clay was deposited on the inner shelf in the Salisbury
Embayment of the US Atlantic margin at the onset of the carbon isotope excursion marking …

On biosignatures for Mars

F Westall, K Hickman-Lewis, B Cavalazzi… - International Journal of …, 2021‏ - cambridge.org
In this work, we address the difficulty of reliably identifying traces of life on Mars. Several
independent lines of evidence are required to build a compelling body of proof. In particular …