Results 1 to 10 of about 1,822 (175)
Two Records of Relative Paleointensity for the Past 4 Myr [PDF]
Frontiers in Earth Science, 2020 We performed new high-resolution magnetic measurements of sedimentary cores from the east northern Pacific ODP Site 1021 and the East equatorial Pacific ODP Site 851. ODP Site 1021 is characterized by a high clay content with less than 10% carbonates in contrast to ODP Site 851 which is highly carbonated (% CaCO3 of at least 70%).
Valet, Jean-Pierre +4 more
openaire +5 more sources
The necessity of data availability in maintaining the value and longevity of paleointensity results [PDF]
Frontiers in Earth Science, 2014 Asserting the reliability of paleointensity estimates, or comparing relative reliabilities between vastly or subtly different results is a key challenge for paleointensity studies, which often leaves interpretations of these data rife with ambiguities ...
Paterson, Greig A
core +4 more sources
Wavelet-based verification of a relative paleointensity record from the North Pacific [PDF]
Earth, Planets and Space, 2019 Abstract We present a relative paleointensity (RPI) record for the last ~ 1.1 Myr estimated from a sediment core in the central North Pacific, with quality verification using wavelet analysis. Rock magnetic analysis reveals that a stable remanence is carried mainly by single-domain (SD) biogenic magnetite and pseudo-SD detrital magnetite and that ...
Ji Young Shin, Yongjae Yu, Wonnyon Kim
openaire +3 more sources
Magnetic mineralogy of the Baringo core (HSPDP-BTB13-1A, Kenya) shows astronomical forcing with implications for retrieving meaningful paleointensity. [PDF]
Open Res EurThis study evaluates the potential of the BTB13 sedimentary core from the Baringo Basin, Kenya, to contribute to relative paleointensity (RPI) records and improve geochronological correlations across Eastern Africa.
Sier MJ +3 more
europepmc +2 more sources
The importance of clays in speleothem magnetic remanence acquisition. [PDF]
Sci RepSpeleothems are promising recorders of paleosecular variation of the Earth’s magnetic field, but ambiguities remain about the physical processes active during remanence acquisition.
Doctor R +4 more
europepmc +2 more sources
Millennial paleoclimate variations on the Central Tibetan Plateau during MIS4-MIS2 inferred from a sediment core based RPI chronology. [PDF]
Sci RepLakes on the Tibetan Plateau, highly sensitive to environmental changes, play a key role in paleoclimatic studies. However, dating limitations often constrain investigations to periods before the Last Glacial Maximum (LGM).
Zhang Y +8 more
europepmc +2 more sources
Bulk magnetic domain stability controls paleointensity fidelity [PDF]
Proc Natl Acad Sci U S A, 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 ...
Muxworthy, Adrian R +3 more
core +2 more sources
Earth and Planetary Science Letters, 2012 Abstract Integrated Ocean Drilling Program (IODP) Expedition 303 to the North Atlantic in 2004 recovered rapidly deposited deep-sea sediments at IODP Site U1305 on Eirik Drift, located south of Greenland at 3460 m water depth, along the path of the Western Boundary Under Current (WBUC).
Mazaud, A. +2 more
openaire +3 more sources
Earth and Space Science, 2021 This paper develops a composite absolute paleointensity record for Holocene paleomagnetic secular variation (PSV) from central North America. Twelve full‐vector (inclination, declination, paleointensity) PSV records were assessed in order to build the ...
Steve P. Lund +5 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Relative abundance of magnetite originated from magnetotactic bacteria (magnetofossils) in sediments may influence relative paleointensity (RPI) estimations of the geomagnetic field, as some studies reported an inverse correlation between RPI and the ...
Kosuke Inoue +2 more
doaj +1 more source