Results 181 to 190 of about 1,861 (213)
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Earth and Planetary Science Letters, 2010
Abstract A high-resolution Holocene paleomagnetic secular variation (PSV) and relative paleointensity (RPI) stack was constructed using u-channel paleomagnetic data from six radiocarbon-constrained marine sedimentary sequences raised along the main axis of the Laurentian Channel (eastern Canada), from its head to its mouth.
F. Barletta +4 more
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Abstract A high-resolution Holocene paleomagnetic secular variation (PSV) and relative paleointensity (RPI) stack was constructed using u-channel paleomagnetic data from six radiocarbon-constrained marine sedimentary sequences raised along the main axis of the Laurentian Channel (eastern Canada), from its head to its mouth.
F. Barletta +4 more
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Earth and Planetary Science Letters, 1995
Abstract Three long piston cores from the deep Labrador Sea appear to record Late Pleistocene variations of relative paleointensity of the geomagnetic field. Two cores extend at least into isotope stage 6, the other into stage 5. In addition to δ18O, δ13C and AMS 14C stratigraphies, correlation between cores is facilitated by the presence of rapidly ...
J.S. Stoner +2 more
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Abstract Three long piston cores from the deep Labrador Sea appear to record Late Pleistocene variations of relative paleointensity of the geomagnetic field. Two cores extend at least into isotope stage 6, the other into stage 5. In addition to δ18O, δ13C and AMS 14C stratigraphies, correlation between cores is facilitated by the presence of rapidly ...
J.S. Stoner +2 more
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On the climatic contamination of relative paleointensity estimations from sediments
A fundamental problem of relative paleointensity (RPI) estimations using marine sediments is that magnetic compositional variations induced by environmental changes may influence RPI estimations, which is known as climatic contamination or lithological contamination. Valet et al.Toshitsugu Yamazaki +4 more
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A comparison of relative paleointensity records of the Matuyama Chron for the period 0.75–1.25Ma
Physics of the Earth and Planetary Interiors, 2006Abstract A comparison of 15 records of relative geomagnetic paleointensity, spanning the time interval 0.75–1.25 Ma, has been performed after synchronizing the records at the paleointensity minima corresponding to geomagnetic reversals. Filtering and smoothing of the records indicated that, after synchronization, paleointensity features with ...
Guyodo, Yohan, Valet, Jean-Pierre
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Physics of the Earth and Planetary Interiors, 2004
Abstract The relative paleointensity (RPI) method assumes that the intensity of post depositional remanent magnetization (PDRM) depends exclusively on the magnetic field strength and the concentration of the magnetic carriers. Sedimentary remanence is regarded as an equilibrium state between aligning geomagnetic and randomizing interparticle forces ...
Christine Franke +2 more
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Abstract The relative paleointensity (RPI) method assumes that the intensity of post depositional remanent magnetization (PDRM) depends exclusively on the magnetic field strength and the concentration of the magnetic carriers. Sedimentary remanence is regarded as an equilibrium state between aligning geomagnetic and randomizing interparticle forces ...
Christine Franke +2 more
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Sedimentary records of relative paleointensity of the geomagnetic field: Theory and practice
Reviews of Geophysics, 1993Sediments have proved irresistible targets for attempts at determining the relative variations in the Earth's magnetic field because of the possibility of long and continuous sequences that are well dated and have a reasonable global distribution. The assumption underlying paleointensity studies using sedimentary sequences is that sediments retain a ...
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Physics of the Earth and Planetary Interiors, 1989
Abstract To assess the potential of marine sediments as a source of relative paleointensity information, we have undertaken an investigation of selected box cores stored in the Scripps core repository. We present here new results from two North Atlantic box cores.
Tauxe, Lisa, Valet, Jean-Pierre
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Abstract To assess the potential of marine sediments as a source of relative paleointensity information, we have undertaken an investigation of selected box cores stored in the Scripps core repository. We present here new results from two North Atlantic box cores.
Tauxe, Lisa, Valet, Jean-Pierre
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Paleomagnetism and Relative Paleointensity of Estremenho Limestone Massif stalagmites, from Portugal
Speleothems magnetism is considered an excellent recorder of short-lived variations of the Earth’s magnetic field. Here we provide new geochronological, petrographic, paleomagnetic, and rock magnetic data of a stalagmite from the Estremenho Limestone Massif (from Central Portugal). The stalagmite was dated at 114.7 (±1.5) k.y.Rafael Dinis +9 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
Despite over 70 years of research on sedimentary paleomagnetism, fully quantitative models describing the timing and efficiency of the recording mechanism are not yet available. Here, we present new insights for bioturbated sediments, based on cosmogenic 10Be records of the global field intensity, relative paleointensity, and the depth distribution of ...
Ramon Egli +2 more
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Ramon Egli +2 more
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