Chaos in the Crater.

• Autores: Graham P. Collins
• Localización: Scientific American, ISSN 0036-8733, Vol. 294, Nº. 5, 2006, págs. 19-20
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • 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.