Results 11 to 20 of about 2,674,606 (201)

Limitations in correlation of regional relative geomagnetic paleointensity [PDF]

Geochemistry, Geophysics, Geosystems, 2006
Time domain correlations of common features among relative paleointensity records from sedimentary cores are invaluable to paleomagnetism and paleoclimatology. Sediments with high accumulation rates might now provide millennial scale correlations of temporal variations in the geomagnetic dipole moment.
Mcmillan, D. G., Constable, C. G.
openaire   +3 more sources

A relative paleointensity record of the geomagnetic field since 1.6 Ma from the North Pacific [PDF]

Earth, Planets and Space, 2007
Abstract A paleomagnetic study was conducted on a sediment core KR0310-PC1 taken from the central North Pacific in order to obtain a relative paleointensity record in the Matuyama chron from this region. The core reached to about 1.6 Ma. The age control is based on the correlation of the S ratio (S −0.1T) variations with a global ...
Yamazaki, Toshitsugu, Kanamatsu, Toshiya
core   +6 more sources

Determining Magnetic Field Intensity and Direction From the Anisotropy of Magnetic Remanence in Sediments

Geochemistry, Geophysics, Geosystems
Anisotropy of magnetic remanence (AMR) holds promise for quantifying relative paleointensity values from sedimentary rocks. A proof of concept was established for applied fields that exceeded the intensity of the geomagnetic field.
Felix K. Ostermeier, Stuart A. Gilder, Michael R. Wack, Josef Ježek, Kuang He, David Finn   +5 more
doaj   +2 more sources

Comparing Paleointensity Recording Efficiencies of Detrital and Biogenic Magnetite by Deposition Experiments With Synthetic Sediments

Geochemistry, Geophysics, Geosystems
Marine sediments contain magnetic mineral particles of detrital, biogenic and authigenic origin that record changes in the direction and intensity of the geomagnetic field over geological time.
Kuang He, Huafeng Qin, Sophie C. Roud, Zhaoxia Jiang, Menghan Li, Wenhui Li, Yu‐An Du, Sanzhong Li, Tilo vonDobeneck   +8 more
doaj   +2 more sources

Beryllium ten production and relative paleointensity for the past 1.2 million years

Quaternary Science Reviews
Composite curves of relative paleointensity document the evolution of the geomagnetic field intensity during the past 1.2 Million years. Several records of production of 10Be cosmogenic isotope from the 10Be/9Be ratio (referred to as Be-ratio) covering this period have also been acquired. We add here new 10Be records to the database and produce a first
Valet, Jean-Pierre, Savranskaia, Tatiana, Egli, Ramon, Simon, Quentin, Bassinot, Franck, Thouveny, Nicolas   +5 more
openaire   +4 more sources

Bulk magnetic domain stability controls paleointensity fidelity [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2017
Nonideal, nonsingle-domain magnetic grains are ubiquitous in rocks; however, they can have a detrimental impact on the fidelity of paleomagnetic records—in particular the determination of ancient magnetic field strength (paleointensity), a key means of ...
Yuhji Yamamoto, Adrian Muxworthy, Yongxin Pan   +2 more
exaly   +4 more sources

Relative geomagnetic paleointensity across the Jaramillo Subchron and the Matuyama/Brunhes Boundary

Geophysical Research Letters, 1996
Analysis of old paleomagnetic data and new mineral magnetic data from a sediment core from the central equatorial Pacific Ocean indicates that this core can be used for determination of relative geomagnetic paleointensity. These data indicate that during the Jaramillo subchron, there was a gradual decrease in paleointensity from the onset of the ...
Verosub, Kenneth L., Roberts, Andrew P., Herrero-Bervera, Emilio   +2 more
core   +3 more sources

Long-teta VRM and relative paleointensity estimates in sediments [PDF]

, 1999
Geomagnetic paleointensity measurements from sedimentary records can be severely affected by viscous remanent magnetization (VRM). We present a method for determining varying amounts of long-term VRM acquired during the present polarity interval, using the typically non-linear relationship between acquisition of artificial magnetization and ...
Kok, Yvo S., Tauxe, Lisa
openaire   +2 more sources

Dating North Pacific Abyssal Sediments by Geomagnetic Paleointensity: Implications of Magnetization Carriers, Plio-Pleistocene Climate Change, and Benthic Redox Conditions

Frontiers in Earth Science, 2021
Non-carbonaceous abyssal fine-grained sediments cover vast parts of the North Pacific’s deep oceanic basins and gain increasing interests as glacial carbon traps.
Wanzhang Wang, Tilo von Dobeneck, Thomas Frederichs, Yang Zhang, Lester Lembke-Jene, Ralf Tiedemann, Michael Winklhofer, Dirk Nürnberg   +7 more
doaj   +1 more source

Relative geomagnetic paleointensity from the Jaramillo Subchron to the Matuyama/Brunhes boundary as recorded in a Mediterranean piston core

, 2002
Piston core LC07, located west of the Sicily Strait in the Mediterranean Sea, unambiguously records the Matuyama/ Brunhes (M/B) and the upper Jaramillo polarity reversals, with similar average sediment accumulation rates (SARs) for the Brunhes Chron (2.
Roberts, A. P., Dinarès-Turell, J., Sagnotti, L.   +2 more
core   +3 more sources