Magnetic anomaly
Local variation in the Earth's magnetic field
Magnetic anomaly
In geophysics, a magnetic anomaly is a local variation in the magnetic field of a planetary body resulting from variations in the chemistry or magnetism of the rocks. Mapping of variation over an area is valuable in detecting structures obscured by overlying material. The magnetic variation (geomagnetic reversals) in successive bands of ocean floor parallel with mid-ocean ridges was important evidence for seafloor spreading, a concept central to the theory of plate tectonics.
Read on Wikipedia · Image Michael Purucker, Public domain
Open boosters, collect cards and trade them. Free to play.
Play for free