Results 261 to 270 of about 476,528 (304)
Some of the next articles are maybe not open access.
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.
openaire +1 more source
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 ...
openaire +2 more sources
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.
openaire +1 more source
Rock magnetism—Geophysical aspects
Advances in Physics, 1955Summary This review will not be concerned with rock magnetism as a geophysical tool to assist the geologist in unravelling structures and in the correlation of strata. No doubt the remarkable development since the war of the airborne magnetometer or fluxgate and the use in consequence now made of magnetic surveys will soon need to draw upon the ...
openaire +1 more source
Philosophical Magazine, 1956
Abstract Measurements have been made of the magnetic polarization of 450 specimens of basaltic lavas of the Deccan Trap taken from two sites about 500 miles apart. With the exception of some nearly randomly magnetized specimens, the main direction of magnetization is N. 155° E. and the dip is 53° downwards.
J. A. Clegg +2 more
openaire +1 more source
Abstract Measurements have been made of the magnetic polarization of 450 specimens of basaltic lavas of the Deccan Trap taken from two sites about 500 miles apart. With the exception of some nearly randomly magnetized specimens, the main direction of magnetization is N. 155° E. and the dip is 53° downwards.
J. A. Clegg +2 more
openaire +1 more source
Methods in Rock Magnetism and Palaeomagnetism
1983During the last 30 years the study of the magnetic properties of rocks and minerals has substantially contributed to several fields of science. Perhaps the best known and most significant advances have resulted from the study of palaeomagnetism, which led to quantitative confirmation of continental drift and polar wandering through interpretation of ...
openaire +1 more source
The role of magnetostriction in rock magnetism
Advances in Physics, 1957(1957). The role of magnetostriction in rock magnetism. Advances in Physics: Vol. 6, No. 23, pp. 362-363.
openaire +1 more source
Rock Magnetism and Dike Classification
The Journal of Geology, 1964It is shown in this paper that it is possible to use remanent magnetism as a tool for geologic classification, Several suites of diabase dikes from Ontario and Quebec were sampled and widely differing magnetic properties found. It is shown that the direction of remanent magnetization, as well as the intensity, forms separate and distinct criteria for ...
openaire +1 more source
Mutual complement between statistical and neural network approaches for rock magnetism data analysis
Expert Systems With Applications, 2009William W Guo +2 more
exaly