The Arctic Circle Details & Data
Magnetostratigraphy is also prominently displayed by igneous dikes intruded at the spreading centers of oceans. Their remanent magnetism is so powerful that its magnitude and path may possibly be measured from aircraft. These dikes magnetize shortly right after sea floor hydrothermal metamorphism, which follows igneous cooling at this time the dikes magnetize in the path of the contemporary geomagnetic field. The fauna of the Siberian shallow shelf seas is also comparatively impoverished as it is confronted with the low principal…