Results 71 to 80 of about 2,212 (217)
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.Abstract Mid‐ocean ridges, the Earth's most extensive volcanic system, exhibit unique characteristics in sediment‐dominant environments. Thick sediment cover insulates the crust and channels fluid along pathways that can lead to the formation of distinct crustal alteration patterns, exceptionally large mineral deposits, and specialized chemosynthetic ...
Christopher Galley +8 more
wiley +1 more source
Absolute Thellier paleointensities from Ponta Grossa dikes (southern Brazil) and the early Cretaceous geomagnetic field strength [PDF]
Geofísica Internacional, 2009 We report a detailed rock magnetic and Thellier paleointensity study from ~ 130.5 Ma Ponta Grossa Dike Swarms in Southern Brazil. Twenty-nine samples from seven cooling units were pre-selected for paleointensity experiments based on their low viscosity ...
J. Urrutia-Fucugauchi +5 more
doaj
Geochemistry, Geophysics, Geosystems, 2014 Information on the strength of the geomagnetic field is important for understanding the behavior of the geodynamo. Polarity reversal frequency increases toward the late Cenozoic since the end of the Cretaceous Normal Superchron.
Toshitsugu Yamazaki, Yuhji Yamamoto
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2023 The natural remanent magnetization (NRM) of high sedimentation rate sediments provides significant information about paleomagnetic secular variation of the Earth's magnetic field and can also potentially be used for stratigraphy. However, NRM acquisition
Édouard G. H. Philippe +6 more
doaj +1 more source
A New View of Long-Term Geomagnetic Field Secular Variation
Frontiers in Earth Science, 2018 This study carries out a statistical analysis of high-resolution PSV records for the last ~70 ka from three different regions of the Earth. We consider directional and intensity variability in each region on time scales of 103-105 years in order to ...
Steve P. Lund
doaj +1 more source
The Importance of Sample‐to‐Sensor Distance in Quantitative Micro(Paleo‐)Magnetic Analysis
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.Abstract Information on the past of Earth's magnetic field can be retrieved from magnetic grains in rock samples. Micromagnetic Tomography (MMT) is a recently developed method that uses magnetic surface scans from a Quantum Diamond Microscope (QDM) combined with the position of magnetic grains in rock samples to calculate the magnetic moments of those ...
Rosa A. de Boer +4 more
wiley +1 more source
(Figure 2) Paleointensity of sediment core MD97-2140 (1654-1724cm)
, 2003 (Figure 2) Paleointensity of sediment core MD97-2140 (1654 ...
Nicolas Thouveny (6972332) +5 more
core +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 +6 more
wiley +1 more source
Revised chronology for late Pleistocene Mono Lake sediments based on paleointensity correlation to the global reference curve [PDF]
, 2006 Lakes are highly sensitive recorders of climate processes, but are extremely difficult to correlate precisely to ice-core and marine records, especially in the absence of reliable radiocarbon dates. Relative paleointensity (RPI) of Earth's magnetic field
Zimmerman, Susan H. +3 more
core +1 more source
Resolving the Internal Magnetic Domain Structure of Cloudy Zone Tetrataenite
Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.Abstract Recent advances in magnetic imaging can directly capture the internal magnetization of natural and synthetic materials at resolutions <10 nm. This capability opens new possibilities to determine the magnetic domain state of ferromagnetic minerals that are fundamental for recording and retaining paleomagnetic records.
Elias N. Mansbach +5 more
wiley +1 more source