Results 91 to 100 of about 188 (119)
Magnetostratigraphic resolution of the late Ediacaran paleomagnetic enigma
Pierce J +13 more
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Paleointensity study of McMurdo volcanic rocks, Antarctica
Paleointensity study of McMurdo volcanic rocks, Antarcticaopenaire
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Physics of the Earth and Planetary Interiors, 2007
Through several decades of research, absolute paleointensity estimates have been obtained from a wide range of rocks with varying ages, covering the last 3.45 Ga years. These paleointensity data are crucial to study the past geodynamo and the geological evolution of the Earth's deep interior.
Fabio Donadini +5 more
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Through several decades of research, absolute paleointensity estimates have been obtained from a wide range of rocks with varying ages, covering the last 3.45 Ga years. These paleointensity data are crucial to study the past geodynamo and the geological evolution of the Earth's deep interior.
Fabio Donadini +5 more
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Introduction to Paleointensity Articles
Reviews of Geophysics, 1988After indicating the basis of the technique, its use with a cryogenic SQUID magnetometer is outlined, particular emphasis being given to the need for stringent reliability criteria. Comparison of results for some samples is made with results obtained using the Shaw alternating‐field technique, and the agreement is satisfactory.
Ronald T. Merrill, J. R. Heirtzler
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Paleointensity determinations of lunar samples
Physics of the Earth and Planetary Interiors, 1977Abstract Evidence for the existence of an ancient lunar field comes from the NRM of lunar rocks and from measurements of local lunar surface magnetic fields. Even when the Fe particles present in the rocks possess enough magnetic stability to preserve a record of the original magnetizing field, there are considerable difficulties in estimating the ...
D.W. Collinson, A. Stephenson
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Absolute paleointensity and magnetomineralogical changes
Journal of Geophysical Research: Solid Earth, 1996Determinations of absolute paleointensity are often hampered by magnetomineralogical changes produced within samples of lava flows during successive heatings. Such changes which directly affect the capacity for a sample to acquire a partial thermoremanent magnetization (PTRM) are reflected by negative pTRM checks, a deviation between the original pTRM ...
Valet, Jean-Pierre +6 more
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Meteorite magnetization and paleointensity
Advances in Space Research, 1982Abstract The five chemical classes of chondrite, i.e. E-, H-, L-, LL- and C-chondrite, and three major classes of achondrite, i.e. diogenite, eucrite plus howardite, and ureilite, are magnetically identified to respective separated domains on an Is (α)/Is versus Is diagram, where Is and Is (α) denote respectively the saturation magnetization and the ...
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Latest Pleistocene and Holocene Geomagnetic Paleointensity on Hawaii
Science, 1993Geomagnetic paleointensity determinations from radiocarbon-dated lava flows on the island of Hawaii provide an estimate of broad trends in paleointensity for Holocene time and offer a glimpse of intensity variations near the end of the last glacial period.
E A, Mankinen, D E, Champion
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Paleointensity Bursts in the Geomagnetic Field History
Geomagnetism and Aeronomy, 2020Regularities in the distribution of extreme (burst) increases in paleointensities from 3000 Ma to the present have been studied. Paleointensity bursts that exceed several times its average values Havg have been found to occur over the entire geomagnetic history.
A. Yu. Kurazhkovskii +2 more
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