Results 41 to 50 of about 699 (206)

A stacked record of relative paleointensity for the past 500 ka in the western equatorial Indian Ocean

, 2023
<p>High-quality relative paleointensity (RPI) is important for the study of Earth Interior and sediments dating. Many existing high-resolution RPI curves have been obtained from the North Atlantic and Pacific Ocean.
Zhou Liang
core   +1 more source

A Physical Interpretation of Asymmetric Growth and Decay of the Geomagnetic Dipole Moment

Geochemistry, Geophysics, Geosystems, 2022
Observations of relative paleointensity reveal several forms of asymmetry in the time dependence of the virtual axial dipole moment (VADM). Slow decline of the VADM into a reversal is often followed by a more rapid rise back to a quasi‐steady state ...
B. A. Buffett, M. S. Avery, W. Davis
doaj   +1 more source

Expedition 306 summary

, 2006
The overall aim of the North Atlantic paleoceanography study of Integrated Ocean Drilling Program Expedition 306 is to place late Neogene–Quaternary climate proxies in the North Atlantic into a chronology based on a combination of geomagnetic ...
Hagino, Kyoko, Higgins, Sean M., Kulhanek, Denise K., Aboud, Essam, Evans, Helen, Akimoto, Kazumi, Harris, Robert, Nanayama, Futoshi, Bjørklund, Kjell R., Hatakeda, Kentaro, Guyodo, Yohan J.B., Gruetzner, Jens, Kanamatsu, Toshiya, Nielsen, Simon H.H., Rashid, Harunur, Stein, Ruediger, Hefter, Jens Norbert, Voelker, Antje, Bailey, Ian, Zhai, Qiumin, Ohno, Masao, Fang, Nianqiao, Sierro Sanchez, Francisco J., Judge, Shelley A., Alvarez Zarikian, Carlos A., Acton, Gary D., Ferretti, Patrizia   +26 more
core   +1 more source

Oriented Magnetite Inclusions in Plagioclase: Implications for the Anisotropy of Magnetic Remanence

Geochemistry, Geophysics, Geosystems, 2022
Micron to sub‐micron sized ferromagnetic inclusions in rock forming silicate minerals may give rise to particularly stable remanent magnetizations. When a population of inclusions have a preferred crystallographic or shape orientation in a rock, the ...
O. Ageeva, G. Habler, S. A. Gilder, R. Schuster, A. Pertsev, O. Pilipenko, G. Bian, R. Abart   +7 more
doaj   +1 more source

On the use of calibrated relative paleointensity records to improve millennial‐scale geomagnetic field models [PDF]

Geochemistry, Geophysics, Geosystems, 2006
Current millennial‐scale time‐varying global geomagnetic field models suffer from a lack of intensity data compared to directional data, because only thermoremanently magnetized material can provide absolute information about the past field strength. The number of archeomagnetic artifacts that can provide such data diminishes rapidly prior to 3000 B.C.
Korte, M., Constable, C.
openaire   +3 more sources

Consistent and Contrasting Aspects of the Geomagnetic Field Across Epochs With Distinct Reversal Frequencies Revealed by Modeling the Kiaman Superchron

Geochemistry, Geophysics, Geosystems, 2021
This work presents an extensive directional paleomagnetic database of the Kiaman reversed superchron. It is composed of 1,459 paleomagnetic directions from igneous rocks corresponding to 91 data sets (or paleomagnetic poles).
Daniele Brandt, Marcia Ernesto, Catherine Constable   +2 more
doaj   +1 more source

Paleomagnetic Recording Efficiency of Sedimentary Magnetic Mineral Inclusions: Implications for Relative Paleointensity Determinations [PDF]

Journal of Geophysical Research: Solid Earth, 2019
AbstractSedimentary relative paleointensity (RPI) records are often carried by complex magnetic mineral mixtures, including detrital and biogenic magnetic minerals. Recent studies have demonstrated that magnetic inclusions within larger detrital silicate particles can make significant contributions to sedimentary paleomagnetic records.
Hoabin Hong, Liao Chang, Akira Hayashida, Andrew P. Roberts, David Heslop, Greig A. Paterson, Kazuto Kodama, Lisa Tauxe   +7 more
openaire   +4 more sources

Chronological Assessment of the Balta Alba Kurgan Loess-Paleosol Section (Romania) – A Comparative Study on Different Dating Methods for a Robust and Precise Age Model

Frontiers in Earth Science, 2021
Loess-paleosol sequences (LPSs) are important terrestrial archives of paleoenvironmental and paleoclimatic information. One of the main obstacles for the investigation and interpretation of these archives is the uncertainty of their age-depth ...
Stephanie Scheidt, Sonja Berg, Ulrich Hambach, Ulrich Hambach, Nicole Klasen, Stephan Pötter, Alexander Stolz, Daniel Veres, Christian Zeeden, Dominik Brill, Helmut Brückner, Stephanie Kusch, Christian Laag, Christian Laag, Frank Lehmkuhl, Martin Melles, Florian Monnens, Lukas Oppermann, Janet Rethemeyer, Janina J. Nett   +19 more
doaj   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

A full sequence of the Matuyama–Brunhes geomagnetic reversal in the Chiba composite section, Central Japan

Progress in Earth and Planetary Science, 2020
Geological records of the Matuyama–Brunhes (M–B) geomagnetic reversal facilitate the development of an age model for sedimentary and volcanic sequences and help decipher the dynamics of the Earth’s magnetic field.
Yuki Haneda, Makoto Okada, Yusuke Suganuma, Takahiro Kitamura   +3 more
doaj   +1 more source