Results 81 to 90 of about 1,861 (213)

Ultra-high sensitivity moment magnetometry of geological samples using magnetic microscopy [PDF]

, 2016
Useful paleomagnetic information is expected to be recorded by samples with moments up to three orders of magnitude below the detection limit of standard superconducting rock magnetometers.
Lima, Eduardo A., Weiss, Benjamin P
core   +2 more sources

Application of an Anisotropy‐Based Correction to Relative Paleointensity Estimates of Experimentally Deposited Sediments [PDF]

Geochemistry, Geophysics, Geosystems, 2018
AbstractThe magnetization of a sediment is acquired when ferromagnetic detrital particles align with the Earth's magnetic field as they settle through the water column. The relative continuity and ubiquity of the global sedimentary record makes sediments and sedimentary rocks an ideal target for studies of relative paleointensity (RPI) and the ...
F. R. Molinek, D. Bilardello
openaire   +1 more source

Evolution of Terrestrial Planetary Bodies and Implications for Habitability

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract The terrestrial planetary bodies of our solar system—Mercury, Venus, Earth, and Mars—share a common origin through nebular accretion and early magma ocean differentiation, yet they diverged significantly in geological evolution, tectonic regimes, and habitability.
Peter A. Cawood, Eva E. Stüeken, Priyadarshi Chowdhury, Chris J. Hawkesworth, Jacob A. Mulder   +4 more
wiley   +1 more source

Magnetic Stability of Magnetite Particles With Single Vortex Structure During Low‐Temperature Oxidation

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract To characterize the magnetic stability of paleomagnetically important single vortex (SV) particles, we systematically studied three synthetic magnetite samples with mean sizes of 79, 299, and 685 nm all within the SV size range. We examined the rock magnetic properties of these samples during low‐temperature oxidation both from experimental ...
Kunpeng Ge, Wyn Williams, Qingsong Liu, Juzhi Deng, Yanguo Wang, Qing Ji, Shuzhong Sheng, Lesleis Nagy, Hui Zhou, Junling Pei   +9 more
wiley   +1 more source

An initial case study to deconvolve natural remanent magnetization of a continuous paleomagnetic sample using the software UDECON

Earth, Planets and Space, 2018
Previous studies have compiled relative paleointensity data for the last 2–3 Ma from individual paleomagnetic records obtained from marine sediment cores. These records have mostly been obtained by pass-through measurements, which are known to smooth and
Yuhji Yamamoto, Toshitsugu Yamazaki, Toshiya Kanamatsu   +2 more
doaj   +1 more source

Moderate Thermal Conductivity of Fe‐Ni‐Si Alloy at Earth's Core Conditions: Implications for Core Thermal Evolution and Geodynamo

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Earth's presently‐active magnetic field is thought to be generated by geodynamo via convection of liquid outer core, primarily composed of Fe alloyed with Ni and light elements, for example, Si. Core thermal conductivity critically controls its thermal evolution, dynamics, and available energy (thermal vs. compositional) powering the geodynamo
Wen‐Pin Hsieh, Yi‐Ting Chiang, Frédéric Deschamps, Chao‐Chih Chen, Jen‐Wei Chang, Daijo Ikuta, Eiji Ohtani   +6 more
wiley   +1 more source

New Insights Into the Proposed Geomagnetic Excursion Hilina Pali From High‐Resolution Lake Sediment Cores From the Polar Ural Mountains, Arctic Russia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract This study presents paleomagnetic records from three 24 m‐long sediment cores from the neighboring lakes Bolshoye Shchuch'ye and Maloye Shchuch'ye, located about 10 km apart in the Polar Urals in northern Russia. The age model, based on radiocarbon dating and varve counting, shows that the sediment sequences reach back up to about 23.5 ka cal.
S. Scheidt, S. Ólafsdóttir, J. Brendryen, N. R. Nowaczyk, M. M. Lenz, J. I. Svendsen, H. Haflidason   +6 more
wiley   +1 more source

Long-lived magnetism on chondrite parent bodies [PDF]

, 2017
publisher: Elsevier articletitle: Long-lived magnetism on chondrite parent bodies journaltitle: Earth and Planetary Science Letters articlelink: http://dx.doi.org/10.1016/j.epsl.2017.07.035 content_type: article copyright: © 2017 The Authors.
Acton, Adrian R. Muxworthy, Almeida, Bischoff, Brecher, Bryson, Bryson, Budde, Butler, Butterworth, Böhnel, Böhnel, Carporzen, Cisowski, Collinson, Connelly, Day, Desch, Dominik C. Hezel, Dos Santos, Doyle, Ebel, Einsle, Elangovan, Elkins-Tanton, Elliott, Emmerton, Fu, Fu, Funaki, Gattacceca, Gattacceca, Gattacceca, Gattacceca, Gattacceca, Grady, Graham, Griffin, Helena C. Bates, Herndon, Hezel, Hezel, Hughes, Jay Shah, Jogo, Ketcham, Kirschvink, Kletetschka, Kojima, Krot, Krot, Laneuville, Lappe, Lee, Matthew J. Genge, Mostefaoui, Muxworthy, Muxworthy, Nagashima, Nichols, Roberts, Sahijpal, Sara S. Russell, Scheinberg, Schneider, Scott, Scott, Seitz, Selkin, Smith, Sterenborg, Strangway, Sugiura, Tarduno, Tarduno, Tarduno, Tikoo, Tomeoka, Uehara, Verwey, Wang, Wasilewski, Wasilewski, Watson, Weiss, Willis, Wood, Yu, Yu, Zeigler   +89 more
core   +1 more source

Micromagnetic Simulations of Chemical Remanent Magnetization Acquisition in Single‐Vortex Magnetite Particles

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Magnetic minerals can preserve remanent magnetization to provide ancient magnetic field records. Although thermoremanent magnetization (TRM) is well understood, chemical remanent magnetization (CRM) from chemical processes is also prevalent in nature and can complicate TRM records by introducing additional remanence signals.
Shichu Chen, Liao Chang, Wyn Williams
wiley   +1 more source

Quantifying Uncertainty in Time Averages of the Geomagnetic Dipole

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract Time averages of the geomagnetic field provide insights into the state of the geodynamo, but uncertainties in these averages can compromise the interpretation. An important source of uncertainty is due to a restricted averaging duration. Short averages do not sample the full range of variability, leading to errors in the resulting estimates ...
Bruce Buffett, Margaret Avery
wiley   +1 more source