Results 211 to 220 of about 1,404 (259)
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The Moon, 1972
The relationship between the magnetization and temperature in a high constant magnetic field for a temperature range between 5 K and 1100 K was examined for Apollo 11, 12 and 14 lunar materials. The average value of Curie point temperature is (768.2 ± 3.5)°C for the lunar igneous rocks and (762.5 ± 3.4)°C for the lunar fines and breccias.
T. Nagata, R. M. Fisher, F. C. Schwerer
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The relationship between the magnetization and temperature in a high constant magnetic field for a temperature range between 5 K and 1100 K was examined for Apollo 11, 12 and 14 lunar materials. The average value of Curie point temperature is (768.2 ± 3.5)°C for the lunar igneous rocks and (762.5 ± 3.4)°C for the lunar fines and breccias.
T. Nagata, R. M. Fisher, F. C. Schwerer
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1997
Rock Magnetism, first published in 1997, is a comprehensive treatment of fine particle magnetism and the magnetic properties of rocks. Starting from atomic magnetism and magnetostatic principles, the authors explain why domains and micromagnetic structures form in ferromagnetic crystals and how these lead to magnetic memory in the form of thermal ...
David J. Dunlop, Özden Özdemir
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Rock Magnetism, first published in 1997, is a comprehensive treatment of fine particle magnetism and the magnetic properties of rocks. Starting from atomic magnetism and magnetostatic principles, the authors explain why domains and micromagnetic structures form in ferromagnetic crystals and how these lead to magnetic memory in the form of thermal ...
David J. Dunlop, Özden Özdemir
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Rock Magnetism and the Differentiation of Dolerite Sill
Journal of the Geological Society of Australia, 1954Abstract Measurements of intensity of magnetization and susceptibility have been made at intervals of 5 ft. on some bore cores from Tasmanian tholeiites of Jurassic age. In all cases the direction of magnetization was nearly vertical. One sill appears to have its upper 700 ft. magnetized normally and its lower part reversed.
J. C. Jaeger, Germaine Joplin
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Palaeomagnetism and rock magnetism
Earth-Science Reviews, 1966Summary The magnetic study of rocks leads to three broad fields of knowledge. The first is the history of continental movement as deduced from magnetic rocks, and the comparison of palaeomagnetically determined ancient latitudes with palaeoclimatological evidence. These areas are reviewed quite briefly. The second field is the history of the earth's
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An analysis of rock magnetic data
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1960Abstract The data obtained from numerous palaeomagnetic measurements made during the past decade have shown that while the geologically younger rock formations are magnetized in directions close to that of the present earth’s magnetic field, the remanent magnetic polarizations of older rocks depart markedly from this pattern.
Patrick Maynard Stuart Blackett +2 more
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Some observations on rock magnetism
Geophysics, 1958Abstract It seems that in general the plane of maximum magnetic susceptibility lies in the bedding plane for sediments and in the plane of foliation for metamorphic rocks; there is, also, a tendency for the remanent vector to lie in the plane of foliation in the latter.
Lynn Gorman Howell +2 more
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An instance of rock magnetization by lightning
International Geology Review, 1967Paleomagnetic studies of effusive rocks from the Middle Devonian Onguday and Kuratinsk suites (Altay-Sayan) showed that collected specimens possessed natural remanent magnetism in excess of the background average induced by the present geomagnetic field for the suites by two orders of magnitude.
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The physical theory of rock magnetism
Advances in Physics, 1963Abstract Magnetite and hematite are representative of the ferrimagnetic and weakly ferromagnetic minerals which are responsible for the magnetic properties of rocks reviewed in this paper. Magnetite grains are multi-domains in the size range of interest (0.1 μ–1000 μ), whereas hematite grains in the same size range are almost certainly single domains ...
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Rock magnetism and the Earth's palaeopoles
Geofisica pura e applicata, 1962On the assumption of a constant earth radius the spherical-trigonometric determination of former pole positions depends on the position of the North Pole of today. On the basis of an expanding earth, the determination of the palaeopoles should not be attempted on the present globe.
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