Results 41 to 50 of about 188 (119)
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Magnetic minerals can preserve remanent magnetization to provide ancient magnetic field records. Although thermoremanent magnetization (TRM) is well understood, chemical remanent magnetization (CRM) from chemical processes is also prevalent in nature and can complicate TRM records by introducing additional remanence signals.
Shichu Chen, Liao Chang, Wyn Williams
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Quantifying Uncertainty in Time Averages of the Geomagnetic Dipole
Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.Abstract Time averages of the geomagnetic field provide insights into the state of the geodynamo, but uncertainties in these averages can compromise the interpretation. An important source of uncertainty is due to a restricted averaging duration. Short averages do not sample the full range of variability, leading to errors in the resulting estimates ...
Bruce Buffett, Margaret Avery
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Pre‐Excavation Identification and Dating of Iron Age Destruction Events
Archaeological Prospection, Volume 32, Issue 4, Page 1021-1030, October/December 2025.ABSTRACT To maximize extracted data while minimizing excavated areas, archaeologists increasingly use archaeological surveys, geophysical surveys and remote sensing to gain comprehensive regional pictures and decide if and where to excavate. The goal of this effort is to leave sufficient unexcavated areas for future generations and save time and ...
Yoav Vaknin +5 more
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Selection of Basalts for Paleointensity Studies
Journal of geomagnetism and geoelectricity, 1986 The selection of basalt samples for the determination of paleointensity, proposed by SENANAYAKE et al. (1982) based mainly on the low-temperature susceptibility variation, may not be adequate for the purpose. Besides the Type 2 basalts in their classification, the magnetic mineral Fe2.9Ti0.1O4 (TM10), which occurs commonly in basalts, also shows an ...
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Variations of paleointensity in the Paleogene
, 2013 Behavior of the geomagnetic field intensity in the Paleogene from sedimentary rocks of the Russian Plate was investigated. It is revealed that in the beginning of the Paleogene alternating of paleointensity variations of little amplitude (about 0.5 Ho, where Ho is the value of modern geomagnetic field taken as 40 mkT) and bursts of large amplitude (up ...
Kurazhkovskii, A. Yu. +2 more
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Paleointensity Determinations with Measurements at High Temperature.
Journal of geomagnetism and geoelectricity, 1995 Paleointensity determinations following the principle of the Konigsberger Thellier Thellier (KTT) method, but with measurement at high temperatures have been carried out. The high temperature measurements were made with a continuous thermal demagnetization system, which operates as a modification of a 2G horizontal access cryogenic magnetometer.
Hidefumi Tanaka +3 more
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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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Thellier-type paleointensity data from multidomain specimens
Physics of the Earth and Planetary Interiors, 2015 Identifying and excluding inaccurate paleointensity estimates that can arise from the effects of multidomain (MD) particles remains a key challenge for paleointensity studies. Here we approach this problem by incorporating realistic experimental noise into a phenomenological MD model, systematically exploring the parameter space of paleointensity ...
Paterson, Greig A +3 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.
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High geomagnetic field intensity recorded by anorthosite xenoliths requires a strongly powered late Mesoproterozoic geodynamo. [PDF]
Proc Natl Acad Sci U S A, 2022 Zhang Y +3 more
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