Origin of Thermoremanent Magnetization

Physical and chemical studies of the earth and planets along with their sur roundings are now developing very rapidly. As these studies are of essentially international character, many international conferences, symposia, seminars and workshops are held every year. To publish proceedings of these meetings is of course important for tracing development of various disciplines of earth and plane tary sciences though publishing is fast getting to be an expensive business. It is my pleasure to learn that the Center for Academic Publications Japan and the Japan Scientific Societies Press have agreed to undertake the publication of a series "Advances in Earth and Planetary Sciences" which should certainly become an important medium for conveying achievements of various meetings to the aca demic as well as non-academic scientific communities. It is planned to publish the series mostly on the basis of proceedings that appear in the Journal of Geomagnetism and Geoelectricity edited by the Society 'Of Terrestrial Magnetism and Electricity of Japan, the Journal of Physics of the Earth by the Seismological SOCiety of Japan and the Volcanological Society of Japan, and the Geochemical Journal by the Geochemical Society of Japan, although occasional volumes of the series will include independent proceedings. Selection of meetings, of which the proceedings will be included in the series, will be made by the Editorial Committee for which I have the honour to work as the General Editor.

TRM and Its Variation with Grain Size: A Review.- Single Domain Oxide Particles as a Source of Thermoremanent Magnetization.- Domain Structure of Titanomagnetites and Its Variation with Temperature.- The Demagnetization Field of Multidomain Grains.- The Hunting of the `Psark .- On the Origin of Stable Remanence in Pseudo-Single Domain Grains.- The Preparation, Characterization and Magnetic Properties of Synthetic Analogues of Some Carriers of the Palaeomagnetic Record.- Reduction of Hematite to Magnetite under Natural and Laboratory Conditions.- Characteristics of First Order Shock Induced Magnetic Transitions in Iron and Discrimination from TRM.- The Thermoremanence Hypothesis and the Origin of Magnetization in Iron Meteorites.- Thermal Overprinting of Natural Remanent Magnetization and K/Ar Ages in Metamorphic Rocks.- Does TRM Occur in Oceanic Layer 2 Basalts?.- The Effects of Alteration on the Natural Remanent Magnetization of Three Ophiolite Complexes: Possible Implications for the Oceanic Crust.