Results 1 to 10 of about 9,304 (187)

Contrasting Recording Efficiency of Chemical Versus Depositional Remanent Magnetization in Sediments

Geophysical Research Letters
How and when sedimentary rocks record Earth's magnetic field is complex. Most studies assume a time‐progressive lock‐in mechanism during sediment deposition called depositional remanent magnetization (DRM).
Sophie C. Roud, Stuart A. Gilder
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Potential Bias in Volcanic Paleomagnetic Records Due To Superimposed Chemical Remanent Magnetization

Geophysical Research Letters
Volcanic rocks, preserving paleorecords of Earth's magnetic field, are essential to constrain the working of the geodynamo, provided their primary signal was not biased. Using a thermomagnetometer, we simulate a situation where a sample's primary record,
V. P. Shcherbakov, F. Lhuillier, S. K. Gribov, V. A. Tselmovich, N. A. Aphinogenova   +4 more
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Quantifying Inclination Shallowing and Representing Flattening Uncertainty in Sedimentary Paleomagnetic Poles

Geochemistry, Geophysics, Geosystems, 2022
Inclination is the angle of a magnetization vector from horizontal. Clastic sedimentary rocks often experience inclination shallowing whereby syn‐ to post‐depositional processes result in flattened detrital remanent magnetizations relative to local ...
James Pierce, Yiming Zhang, Eben B. Hodgin, Nicholas L. Swanson‐Hysell   +3 more
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Modulating light absorption and multiferroic properties of BiFeO3-based ferroelectric films by the introduction of ZnO layer

Materials Research Express, 2022
Pure bismuth ferrite (BiFeO _3 , BFO) and ZnO thin films, as well as BFO/ZnO and ZnO/BFO composite thin films were successfully deposited by a sol-gel process on Pt/Ti/SiO _2 /Si and FTO/glass substrates, respectively.
Kexin Li, Wanyun Zhang, Kaixin Guo, Ruirui Cui, Chaoyong Deng, Xu Wang   +5 more
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Matuyama–Brunhes geomagnetic reversal record and associated key tephra layers in Boso Peninsula: extraction of primary magnetization of geomagnetic fields from mixed magnetic minerals of depositional, diagenesis, and weathering processes

Earth, Planets and Space, 2022
We report paleomagnetic records of Matuyama–Brunhes geomagnetic polarity reversal and associated key tephra layers from the Early–Middle Pleistocene marine sedimentary succession in the Boso Peninsula. The outcrop is in Terasaki, Chiba, Japan and ~ 25 km
Hirokuni Oda, Hiroomi Nakazato, Futoshi Nanayama, Yumiko Harigane   +3 more
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On the reliability of drilling core reorientations using palaeomagnetic methods: A case study from the boreholes in the Tarim Basin

地质科技通报, 2023
Objective This study explores the accuracy of drilling core reorientations by using remanent magnetization. Methods To this end, paleomagnetic analyses were carried out on 43 Silurian sandstone samples collected from five boreholes (TKQ101, SHUN9, TAT19,
Weiwei Chen, Fengli Yang, Yuan Zhuang, Mingchen Xu, Yuyang Hu   +4 more
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Magnetoclimatological Record of Late Pleistocene Loess in the Southern Hunshandake Sandy Land, Inner Mongolia: A Threshold Response to the East Asian Summer Monsoon Variations

Geochemistry, Geophysics, Geosystems, 2023
We report the first complete loess–paleosol record spanning the last 130 kyr from the southern extremity of the Hunshandake Sandy Land (HSL) in central‐eastern Mongolia.
Mei Sheng, Kai Jiang, Xisheng Wang, Zhaoxia Jiang, Ling Tang, Zaizheng Zhou   +5 more
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Post-Depositional Fluid Flow in Jurassic Sandstones of the Uncompahgre Uplift: Insights From Magnetic Fabrics

Frontiers in Earth Science, 2020
The anisotropy of magnetic susceptibility (AMS) in sedimentary rocks results from depositional, diagenetic, syn- and post-sedimentary processes that affect magnetic grains. Some studies have also shown the potential role played by post-depositional fluid
John I. Ejembi, Eric C. Ferré, Sara Satolli, Sarah A. Friedman   +3 more
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Greigite (Fe3S4) Formation in Artificial Sediments via Solid‐State Transformation of Lepidocrocite

Geochemistry, Geophysics, Geosystems, 2022
Greigite (Fe3S4) is a ferrimagnetic iron‐sulfide mineral that forms in sediments during diagenesis. Greigite growth can occur diachronously within a stratigraphic profile, complicating or overprinting environmental and paleomagnetic records. An important
Sophie C. Roud, Stuart A. Gilder, SoHyun Park   +2 more
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Effects of calcination temperatures on structural, functional, morphological, and magnetic properties of strontium ferrite (SrFe2O4) nanoparticles

Kuwait Journal of Science, 2023
In this proposed work, the strontium ferrite (SrFe2O4) nanoparticles were successfully synthesized in the presence of strontium nitrate (Sr (NO3)2) and ferric nitrate (Fe (NO3).9H2O) as primary sources by using chemical co-precipitation method.
T. Sivanandan, Sigamani Saravanan
doaj   +1 more source