[HTML][HTML] Magnetotactic bacteria and magnetofossils: ecology, evolution and environmental implications

P Goswami, K He, J Li, Y Pan, AP Roberts… - npj Biofilms and …, 2022 - nature.com
Magnetotactic bacteria (MTB) are a group of phylogenetically diverse and morphologically
varied microorganisms with a magnetoresponsive capability called magnetotaxis or …

Unlocking information about fine magnetic particle assemblages from first-order reversal curve diagrams: Recent advances

AP Roberts, D Heslop, X Zhao, H Oda, R Egli… - Earth-Science …, 2022 - Elsevier
The magnetic domain state of a material determines its magnetic recording capability and
magnetic properties. Constraining the domain state of magnetic components within …

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 …

[HTML][HTML] Rapid light carbon releases and increased aridity linked to Karoo–Ferrar magmatism during the early Toarcian oceanic anoxic event

E Font, LV Duarte, MJ Dekkers, C Remazeilles… - Scientific Reports, 2022 - nature.com
Large-scale release of isotopically light carbon is responsible for the carbon isotope
excursion (CIE) of the Toarcian Oceanic Anoxic Event during the Lower Jurassic. Proposed …

Biomagnetic characterization of air pollution particulates in Lahore, Pakistan

HA Sheikh, BA Maher, V Karloukovski… - Geochemistry …, 2022 - Wiley Online Library
We report the characterization of anthropogenic magnetic particulate matter (MPM) collected
on leaves from roadside Callistemon (bottlebrush) trees from Lahore, Pakistan, and on …

Paleomagnetism of the Ediacaran Avellaneda Formation (Argentina), part I: Paleogeography of the Río de la Plata craton at the dawn of Gondwana

PR Franceschinis, JW Afonso, MJ Arrouy… - Precambrian …, 2022 - Elsevier
A paleomagnetic and rock magnetic study was carried out in the Ediacaran Avellaneda (∼
570 Ma) and Cerro Negro (∼ 555 Ma) Formations belonging to the La Providencia Group, in …

Interpretation of anhysteretic remanent magnetization carriers in magnetofossil‐rich marine sediments

Q Zhang, AP Roberts, S Ge, Y Liu, J Liu… - Journal of …, 2022 - Wiley Online Library
The anhysteretic remanent magnetization (ARM) is an important magnetic parameter for
quantifying the concentration of “fine”, mostly sub‐micron ferrimagnetic particles in rocks and …

Discovery of giant magnetofossils within and outside of the Palaeocene-Eocene Thermal Maximum in the North Atlantic

P Xue, L Chang, Z Pei, RJ Harrison - Earth and Planetary Science Letters, 2022 - Elsevier
Giant magnetofossils have exceptionally large grain sizes and peculiar morphologies
compared to conventional biogenic magnetite nanoparticles. The origin of these unusual …

Abyssal manganese nodule recording of global cooling and Tibetan Plateau uplift impacts on Asian aridification

XD Jiang, X Zhao, XY Zhao, YM Chou… - Geophysical …, 2022 - Wiley Online Library
The impact of central Asian aridification on the low latitude North Pacific Ocean since the
late Miocene remains unclear. To address this question, we systematically studied an …

A depth‐transect of ocean deoxygenation during the Paleocene‐Eocene Thermal Maximum: Magnetofossils in sediment cores from the southeast atlantic

P Xue, L Chang, GR Dickens… - Journal of Geophysical …, 2022 - Wiley Online Library
Abstract The Paleocene‐Eocene Thermal Maximum (PETM,∼ 56 Ma) presents a past
analog for future global warming. Previous studies provided evidence for major loss of …