Results 71 to 80 of about 346 (179)
Geochemistry, Geophysics, GeosystemsThe timing of the formation of the Earth's inner core remains a major mystery in the history of Earth's deep interior, with estimates ranging from >1 billion years to
J. Michael Grappone +3 more
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Brunhes Paleomagnetic Directions and Paleointensities From Northern Hainan Island
Geochemistry, Geophysics, GeosystemsPaleomagnetic studies typically assume that the long‐term, time‐averaged geomagnetic field behaves as a geocentric axial dipole (GAD). While paleodirectional data over the past five million years generally agree with GAD predictions, mid‐to‐low latitude ...
Mengqing Wang +7 more
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A comparison of different techniques for relative paleointensity
Geophysical Research Letters, 1998 Parallel relative paleointensity records that are supposed to display the same geomagnetic variations often show discrepancies. We compared various techniques of normalization with different parameters involving alternating fields (a.f.) and thermal demagnetization of sediment samples spanning the same period from the Indian and the Pacific oceans. The
Jean‐Pierre Valet, Laure Meynadier
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A paleointensity technique for multidomain igneous rocks
Geochemistry, Geophysics, Geosystems, 2013 We developed a paleointensity technique to account for concave‐up Arai diagrams due to multidomain (MD) contributions to determine unbiased paleointensities for 24 trial samples from site GA‐X in Pleistocene lavas from Floreana Island, Galapagos Archipelago.
Wang, Huapei, Kent, Dennis V.
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The intensity of the geomagnetic field from 2.4 Ga old Indian dykes
Geochemistry, Geophysics, Geosystems, 2014 Precambrian paleomagnetic records from dyke swarms provide a unique source of information regarding the Archean geomagnetic field and more specifically the average field strength produced by the early dynamo.
Jean‐Pierre Valet +4 more
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Cooling Rate Correction in Paleointensity Experiments on Archeological and Geological Materials
Geochemistry, Geophysics, GeosystemsObtaining accurate estimates of the absolute intensity of the past geomagnetic field (paleointensity) is one of the major challenges in paleomagnetic research.
Ron Shaar
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Geochemistry, Geophysics, Geosystems, 2008 Thellier paleointensity experiments are carried out on the Early Cretaceous Arapey Formation, which belongs to the Parana Magmatic Province (PMP) in northern Uruguay.
Avto Goguitchaichvili +7 more
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Geochemistry, Geophysics, Geosystems, 2013 Paleomagnetic analysis and radiocarbon dating of an expanded Holocene deep‐sea sediment sequence recovered by Integrated Ocean Drilling Program (IODP) Expedition 303 from Labrador Sea Site U1305 (Lat.: 57°28.5 N, Long.: 48°31.8 W, water depth 3459 m ...
Joseph S. Stoner +4 more
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Detecting dipolarity of the geomagnetic field in the paleomagnetic record. [PDF]
Proc Natl Acad Sci U S A, 2023 Lhuillier F, Shcherbakov VP, Sycheva NK.
europepmc +1 more source
Paleomagnetic Secular Variation Records From the Post‐Glacial Tahiti Coral Reef
Earth and Space ScienceIODP Expedition 310 recovered more than 600 m of Post Last‐Glacial‐Maximum (LGM) coral reef framework rocks from the current reef tract surrounding the island of Tahiti. Six sites (12 holes) were sampled for paleomagnetic studies on the south side of the
Steve P. Lund +3 more
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