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The Jaramillo reversal was a reversal and excursion of the Earth's magnetic field that occurred approximately one million years ago. In the geological time scale it was a "short-term" positive reversal in the then-dominant Matuyama reversed magnetic chronozone; its beginning is widely dated to 990,000 years before the present (BP), and its end to 950,000 BP (though an alternative date of 1.07 million years ago to 990,000 is also found in the scientific literature).

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  • Inversión magnética de Jaramillo (es)
  • Jaramillo reversal (en)
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  • La inversión magnética de Jaramillo, o subcron Jaramillo, fue un evento geológico, que comenzó aproximadamente hace un millón de años, cuando el campo magnético terrestre realizó una corta inversión magnética.del campo magnético de la Tierra. Dentro de la escala de tiempo geológico se puede considerar como una breve inversión magnética, dentro de la dominante inversión magnética Matuyama. El principio del subcron Jaramillo es generalmente datado a 990,000 años antes del presente (BP), y su fin a 950,000 BP (aunque una fecha alternativa de 1.07 millones de años hace a 990,000 es también encontrado en la literatura científica).​ (es)
  • The Jaramillo reversal was a reversal and excursion of the Earth's magnetic field that occurred approximately one million years ago. In the geological time scale it was a "short-term" positive reversal in the then-dominant Matuyama reversed magnetic chronozone; its beginning is widely dated to 990,000 years before the present (BP), and its end to 950,000 BP (though an alternative date of 1.07 million years ago to 990,000 is also found in the scientific literature). (en)
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  • La inversión magnética de Jaramillo, o subcron Jaramillo, fue un evento geológico, que comenzó aproximadamente hace un millón de años, cuando el campo magnético terrestre realizó una corta inversión magnética.del campo magnético de la Tierra. Dentro de la escala de tiempo geológico se puede considerar como una breve inversión magnética, dentro de la dominante inversión magnética Matuyama. El principio del subcron Jaramillo es generalmente datado a 990,000 años antes del presente (BP), y su fin a 950,000 BP (aunque una fecha alternativa de 1.07 millones de años hace a 990,000 es también encontrado en la literatura científica).​ Las causas y mecanismos de las inversiones magnéticas "a corto plazo", como el subcron Jaramillo, así como inversiones mayores como el Brunhes–Matuyama reversal, es tema de estudio y disputa entre investigadores. Una teoría asocia el Jaramillo con el evento de impacto del Lago Bosumtwi, del que queda evidencia gracias a los depósitos de tectitas presentes en Costa de Marfil, aunque esta hipótesis ha sido denominada como "altamente especulativa" y "refutada".​​ * (es)
  • The Jaramillo reversal was a reversal and excursion of the Earth's magnetic field that occurred approximately one million years ago. In the geological time scale it was a "short-term" positive reversal in the then-dominant Matuyama reversed magnetic chronozone; its beginning is widely dated to 990,000 years before the present (BP), and its end to 950,000 BP (though an alternative date of 1.07 million years ago to 990,000 is also found in the scientific literature). The causes and mechanisms of short-term reversals and excursions like the Jaramillo, as well as the major field reversals like the Brunhes–Matuyama reversal, are subjects of study and dispute among researchers. One theory associates the Jaramillo with the Bosumtwi impact event, as evidenced by a tektite strewnfield in the Ivory Coast, though this hypothesis has been claimed as "highly speculative" and "refuted". A later study found the deposition of the Ivory Coast strewn field and the onset of the Jaramillo reversal not to be contempraneous as previsouly inferred. They are separated in time by 30,000 years. (en)
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