Results 11 to 20 of about 9,373 (256)

Evaluating the Compatibility of Hematite (U‐Th)/He Data and Hematite‐Carried Secondary Magnetizations: An Example From the Colorado Front Range

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Ancient magnetization(s), often recorded by hematite (Fe2O3), provide key paleomagnetic constraints on plate interactions through time. Primary remanent magnetizations may be modified or overprinted by secondary processes that complicate interpretations ...
Jordan L. Jensen   +2 more
doaj   +1 more source

Monitoring the Centennial Variation of Heavy Metals in Lake Sediments and Influencing Factors Using Environmental Magnetism and Machine Learning Methods [PDF]

open access: yesE3S Web of Conferences
The association between the magnetic properties of lake sediments and heavy metal(loid)s (HMs) is well-documented; however, their correlation with the chemical fractions of HMs remains under-investigated.
Deng Ligang, Li Huiming, Qian Xin
doaj   +1 more source

Self‐Reversed Magnetization in Sediments Caused by Greigite Alteration

open access: yesGeophysical Research Letters, 2023
Multipolarity remanence in greigite‐bearing sediments has long been recognized, but the cause of this anomalous remanence behavior is not well understood.
Liao Chang   +6 more
doaj   +1 more source

Magnetic properties of epsilon iron(III) oxide nanorod arrays functionalized with gold and copper(II) oxide [PDF]

open access: yes, 2018
A sequential chemical vapor deposition (CVD) - radio frequency (RF)-sputtering approach was adopted to fabricate supported nanocomposites based on the scarcely investigated \u3b5-iron(III) oxide polymorph.
Barreca, Davide   +4 more
core   +1 more source

Estimating Paleointensities From Chemical Remanent Magnetizations of Magnetite Using Non‐Heating Methods

open access: yesJournal of Geophysical Research: Planets, 2023
AbstractMany meteorites experienced aqueous alteration on their parent body. During this process, magnetite usually forms and acquires a chemical remanent magnetization (CRM) if growing in the presence of a magnetic field. The epoch of aqueous alteration on planetesimals encompasses the lifetime of the solar nebula.
Maurel, C., Gattacceca, J.
openaire   +2 more sources

Magnetic signatures of a creosote oil contaminated site: case study in São Paulo, Brazil

open access: yesScientific Reports, 2022
Soils and groundwater contamination modifies the physical–chemical conditions of the environment, altering natural biogeochemical processes of the ground. As a result, several mineral transformations occur, in which iron plays a decisive role.
Carolina Silveira de Moraes   +4 more
doaj   +1 more source

The self-reversal origin of the reversed remanent magnetization in the igneous rocks containing the oxidized Fe-Ti oxide solid solutions

open access: yesContributions to Geophysics and Geodesy, 2011
I study the magnetic and paleomagnetic characteristics of the Pleistocene to Quaternary basalts from the West Carpathian Mountains. I have revealed the existence of the so-called self-reversal remanent magnetization bearing disordered-antiferromagnetic ...
Oto ORLICKÝ
doaj   +1 more source

Chemical remanent magnetization of oceanic crust

open access: yesGeophysical Research Letters, 1990
The effects of chemical remanent magnetization (CRM) of oceanic crust on the anomalous skewness of sea‐floor spreading magnetic anomalies are investigated. Considering a realistic constraint that the actual magnetization at anomaly M0 is reversed, the CRM of layer 2A basalts fails to explain the anomalous skewness of the magnetic anomalies.
J. Verhoef, J. Arkani‐Hamed
openaire   +1 more source

Continuous production of nanosized magnetite through low grade burial

open access: yesGeochemistry, Geophysics, Geosystems, 2012
Geological processes, such as burial, can lead to remagnetization in rocks due to neoformed magnetic minerals that have passed a critical volume, called blocking volume.
Myriam Kars   +3 more
doaj   +1 more source

New criteria for selecting reliable Thellier-type paleointensity results from the 1960 Kilauea lava flows, Hawaii

open access: yesEarth, Planets and Space, 2021
Thellier-type paleointensity experiments associated with partial thermal remanent magnetization checks have been widely used to determine paleointensity values from volcanic and archaeological media.
Doohee Jeong   +5 more
doaj   +1 more source

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