Resumen de Chaos in the Crater.
The article reports that intense, random magnetism is found in the Vredefort Crater near Johannesburg, South Africa. Scientists believe the source of the crater's magnetism was a strong and chaotic magnetic field that was generated by currents flowing in the ionized gases produced by the collision of a 10-kilometer wide asteroid about two billion years ago. Geologists estimate the crater has a diameter of about 200 to 300 kilometers. INSET: SHOCKED ROCKS.
