Magnetic mineral diagenesis

AP Roberts - Earth-Science Reviews, 2015‏ - Elsevier
Reduction–oxidation (redox) reactions occur during burial because sediments contain
reactive mixtures of oxidised and reduced components. Diagenetic chemical reactions …

Environmental magnetism: Principles and applications

Q Liu, AP Roberts, JC Larrasoaña… - Reviews of …, 2012‏ - Wiley Online Library
In environmental magnetism, rock and mineral magnetic techniques are used to investigate
the formation, transportation, deposition, and postdepositional alterations of magnetic …

Understanding fine magnetic particle systems through use of first‐order reversal curve diagrams

AP Roberts, D Heslop, X Zhao… - Reviews of …, 2014‏ - Wiley Online Library
First‐order reversal curve (FORC) diagrams are constructed from a class of partial magnetic
hysteresis loops known as first‐order reversal curves and are used to understand …

Iron and sulfur cycling in acid sulfate soil wetlands under dynamic redox conditions: A review

N Karimian, SG Johnston, ED Burton - Chemosphere, 2018‏ - Elsevier
Acid sulfate soils (ASS) contain substantial quantities of iron sulfide minerals or the oxidation
reaction products of these sulfidic minerals. Transformation of iron (Fe) and sulfur (S) …

A critical appraisal of the “Day” diagram

AP Roberts, L Tauxe, D Heslop… - Journal of Geophysical …, 2018‏ - Wiley Online Library
Abstract The “Day” diagram (Day et al., 1977, https://doi. org/10.1016/0031-9201 (77) 90108-
X) is used widely to make inferences about the domain state of magnetic mineral …

Insight into pH dependent Cr (VI) removal with magnetic Fe3S4

W Liu, L **, J Xu, J Liu, Y Li, P Zhou, C Wang… - Chemical Engineering …, 2019‏ - Elsevier
In this study, an magnetically separable iron sulfide (greigite, Fe 3 S 4) was synthesized by
solvothermal method and employed for effective removal of Cr (VI). The Cr (VI) removal …

Searching for single domain magnetite in the “pseudo‐single‐domain” sedimentary haystack: Implications of biogenic magnetite preservation for sediment magnetism …

AP Roberts, L Chang, D Heslop… - Journal of …, 2012‏ - Wiley Online Library
Magnetic hysteresis measurements of sediments have resulted in widespread reporting of
“pseudo‐single‐domain”‐like magnetic properties. In contrast, the ideal single domain (SD) …

High-pressure synthesis and storage of solid organic compounds in active subduction zones

B Debret, B Ménez, B Walter, H Bouquerel… - Science …, 2022‏ - science.org
Recent thermodynamic and experimental studies have suggested that volatile organic
compounds (eg, methane, formate, and acetate) can be produced and stabilized in …

An improved algorithm for unmixing first‐order reversal curve diagrams using principal component analysis

RJ Harrison, J Muraszko, D Heslop… - Geochemistry …, 2018‏ - Wiley Online Library
First‐order reversal curve (FORC) diagrams of synthetic binary mixtures with single‐domain,
vortex state, and multidomain end‐members (EMs) were analyzed using principal …

Deciphering records of geomagnetic reversals

JP Valet, A Fournier - Reviews of Geophysics, 2016‏ - Wiley Online Library
Polarity reversals of the geomagnetic field are a major feature of the Earth's dynamo.
Questions remain regarding the dynamical processes that give rise to reversals and the …