Results 21 to 30 of about 1,591,950 (295)

Magma storage conditions beneath Krakatau, Indonesia: insight from geochemistry and rock magnetism studies

open access: yesFrontiers in Earth Science, 2023
Understanding the evolution of magma storage conditions on volcanoes which have had more than one caldera-forming eruption (CFE) is important to know about past and present conditions, as a key to forecast future potential hazards.
Aditya Pratama   +13 more
semanticscholar   +1 more source

Paleomagnetism and rock magnetism as tools for volcanology

open access: yesBulletin of Volcanology, 2022
Paleomagnetic and rock magnetic methods for studying volcanoes and their products have been developed since the second half of the twentieth century.
G. Lerner, E. Piispa, J. Bowles, M. Ort
semanticscholar   +1 more source

Magnetic Properties of Plant Ashes and Their Influence on Magnetic Signatures of Fire in Soils

open access: yesFrontiers in Earth Science, 2021
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 evidence suggests that plant ashes provide the most significant source of
Jessica L. Till   +3 more
doaj   +1 more source

A First‐Order Statistical Exploration of the Mathematical Limits of Micromagnetic Tomography

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The recently developed Micromagnetic Tomography (MMT) technique combines advances in high resolution scanning magnetometry and micro X‐ray computed tomography.
Frenk Out   +4 more
doaj   +1 more source

The Early Miocene Provenance Shift of ODP Site 1177 and Implications for the Tectonic Evolution of the Shikoku Basin, Philippine Sea Plate

open access: yesFrontiers in Earth Science, 2022
The Ocean Drilling Program Site 1177 recovered the oldest (∼23 Ma) sedimentary records in the Shikoku Basin, northeastern part of the Philippine Sea Plate.
Wei Liu   +10 more
doaj   +1 more source

Simulation of Natural Iron Oxide Alteration in Soil: Conversion of Synthetic Ferrihydrite to Hematite Without Artificial Dopants, Observed With Magnetic Methods

open access: yesGeochemistry, Geophysics, Geosystems, 2020
We present new results on the conversion of pure, undoped synthetic ferrihydrite, wet‐annealed at pH 6.56 and 90°C without stabilizing ligands, to nanophase goethite, hematite, and an intermediate magnetic phase, nanophase maghemite.
Dario Bilardello   +4 more
doaj   +1 more source

Evidence for Widespread Remagnetizations in South America, Case Study of the Itararé Group Rocks From the State of São Paulo, Brazil

open access: yesFrontiers in Earth Science, 2018
Paleomagnetism of South American Jurassic/Cretaceous rocks has been troubled by elongated distributions of poles which has led to contrasting interpretations.
Dario Bilardello   +3 more
doaj   +1 more source

The magnetic record of the Late Glacial-Holocene transition in sediments from Grandfather Lake (Southwest Alaska)

open access: yesGeofísica Internacional, 1999
Las mediciones preliminares de propiedades magnéticas en muestras de un núcleo de 8.5 m. de longitud del lago Granfather (suroeste de Alaska), indican que la magnetización remanente de estos sedimentos reside en magnetita con comportamiento de ...
Pieter A. Vlag, Subir K. Banerjee
doaj   +1 more source

Magnetic Vortex States in Small Octahedral Particles of Intermediate Titanomagnetite

open access: yesGeochemistry, Geophysics, Geosystems, 2018
Fine particles of titanomagnetites (Fe3‐xTixO4, x > 0.5) in the pseudo‐single‐domain (PSD) size (0.5–20 μm) are important carriers of natural remanent magnetization in basalts.
E. Khakhalova   +4 more
doaj   +1 more source

Variations in the Magnetic Properties of Meteoritic Cloudy Zone

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Iron and stony‐iron meteorites form the Widmanstätten pattern during slow cooling. This pattern is composed of several microstructures whose length‐scale, composition and magnetic properties are dependent upon cooling rate.
Claire I. O. Nichols   +7 more
doaj   +1 more source

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