Domain state diagnosis in rock magnetism: evaluation of potential alternatives to the Day diagram

AP Roberts, P Hu, RJ Harrison… - Journal of …, 2019 - Wiley Online Library
The Day diagram is used extensively in rock magnetism for domain state diagnosis. It has
been shown recently to be fundamentally ambiguous for 10 sets of reasons. This ambiguity …

New high‐temperature dependence of magnetic susceptibility‐based climofunction for quantifying paleoprecipitation from Chinese loess

X Gao, Q Hao, F Oldfield, J Bloemendal… - Geochemistry …, 2019 - Wiley Online Library
The ferrimagnetic properties of soils are used to quantitatively reconstruct paleomonsoon
precipitation from Chinese loess. Numerous magneto‐climofunctions have been established …

Diagenetic fate of biogenic soft and hard magnetite in chemically stratified sedimentary environments of Mamanguá Ría, Brazil

D Rodelli, L Jovane, M Giorgioni… - Journal of …, 2019 - Wiley Online Library
Magnetotactic bacteria (MTB) synthesize magnetite and greigite crystals under low oxygen
conditions in the water column or uppermost sediment (greigite‐producing bacteria are …

Micromagnetic simulation of magnetofossils with realistic size and shape distributions: Linking magnetic proxies with nanoscale observations and implications for …

L Chang, RJ Harrison, TA Berndt - Earth and Planetary Science Letters, 2019 - Elsevier
We build micromagnetic models to investigate the magnetic properties of biogenic magnetite–
a common type of magnetic mineral that is responsible for recording a wide range of …

Dependence of bacterial magnetosome morphology on chemical conditions in deep-sea sediments

T Yamazaki, Y Suzuki, M Kouduka… - Earth and Planetary …, 2019 - Elsevier
Magnetotactic bacteria (MTB) play an important role in biogeochemical cycles of iron and
remanent magnetization acquisition of sediments. It is generally considered that magnetite …

Waiting for Forcot: Accelerating FORC processing 100× using a fast‐Fourier‐transform algorithm

TA Berndt, L Chang - Geochemistry, Geophysics, Geosystems, 2019 - Wiley Online Library
First‐order reversal‐curves (FORC) are a widely used tool to analyze magnetic mineralogy
and domain states, but require extensive processing—in particular, smoothing—to be …

[HTML][HTML] First-order reversal curve (FORC) diagrams of nanomagnets with cubic magnetocrystalline anisotropy: A numerical approach

MA Valdez-Grijalva, AR Muxworthy - Journal of Magnetism and Magnetic …, 2019 - Elsevier
First-order reversal curve (FORC) diagrams are increasingly used as a material's magnetic
domain state fingerprint. FORC diagrams of noninteracting dispersions of single-domain …

Simulation of remanent, transient, and induced FORC diagrams for interacting particles with uniaxial, cubic, and hexagonal anisotropy

RJ Harrison, X Zhao, P Hu, T Sato… - Journal of …, 2019 - Wiley Online Library
The diagnostic power of first‐order reversal curve (FORC) diagrams has recently been
enhanced by an extended measurement protocol that yields three additional FORC‐like …

Paleoenvironmental signature of the selandian-thanetian transition event (STTE) and early late paleocene event (ELPE) in the Contessa Road section (western Neo …

R Coccioni, F Frontalini, R Catanzariti, L Jovane… - Palaeogeography …, 2019 - Elsevier
Sedimentary records of the Early Cenozoic indicate a series of events with climatic and
carbon cycle variability known as hyperthermals. A~ 350-kyr-long event of environmental …

Diagenesis and iron paleo-redox proxies: New perspectives from magnetic and iron speciation analyses in the Santa Barbara Basin

Y Wang, IL Hendy, JC Latimer, D Bilardello - Chemical Geology, 2019 - Elsevier
Sedimentary redox proxies are usually employed to reconstruct the paleo-redox conditions
of bottom water environments, assuming that porewater and bottom water dissolved oxygen …