THE BULK MAGNETIZATION CONTRAST ACROSS THE OCEAN CONTINENT BOUNDARY IN THE EAST-COAST OF NORTH-AMERICA

The intermediate wavelength (approximately 600-3000 km) magnetic anoma lies of Earth derived from satellite data, indicate that both continen tal crust and oceanic lithosphere are magnetic. However, no well defin ed and consistent magnetic anomaly is associated with the ocean-contin ent boundary, emphasizing that the bulk magnetization (the vertically integrated magnetization) contrast of oceanic lithosphere and continen tal crust is not appreciable. An upper limit of -37 000 A is estimated for the bulk magnetization contrast using the low-altitude aeromagnet ic and marine magnetic data from across the east coast of North Americ a.