Open AccessThe Palaeomagnetic History of a Doubly‐baked Rock
Author(s) -
Wilson R. L.
Publication year - 1962
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1962.tb00361.x
Subject(s) - laterite , lava , geology , demagnetizing field , geochemistry , paleomagnetism , volcano , geophysics , materials science , magnetization , metallurgy , magnetic field , physics , nickel , quantum mechanics
Summary The technique of thermal demagnetization of the natural moment has allowed the separation of partial thermoremanences induced consecutively in a laterite by a lava and a dyke, and has shown that the lava baked the laterite to a higher temperature (>670°C) than did the dyke (>550°C). The evidence, along with other evidence previously presented, strongly suggests that the Earth's magnetic field was reversed when both bakings took place in Tertiary times.