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Ritmos geológicos y impactos cometarios
Science (New York, N.Y.)
|December 21, 1984
Resumen
Los impactos periódicos de cometas, que ocurren cada 33 y 260 millones de años, se correlacionan con trastornos geológicos y biológicos. Estos ciclos sugieren influencias extraterrestres en la evolución de la Tierra y el tectonismo.
Área de la Ciencia:
- Geología Geología Geología.
- Paleontología Paleontología.
- La astronomía es la astronomía.
Sus antecedentes:
- El Eón Fanerozoico está marcado por importantes eventos geológicos y biológicos.
- Comprender los ciclos a largo plazo en la historia de la Tierra es crucial para los estudios evolutivos y geológicos.
Objetivo del estudio:
- Identificar y analizar las periodicidades en los trastornos geológicos y biológicos durante el Eón Fanerozoico.
- Para investigar el vínculo potencial entre estas periodicidades y los fenómenos extraterrestres, específicamente los impactos de cometas.
Principales métodos:
- Análisis de series temporales de datos de trastornos geológicos y biológicos del Eón Fanerozoico.
- Comparación de las periodicidades identificadas con los ciclos de cráteres de impacto en la Tierra.
Principales resultados:
- Se identificaron dos periodicidades dominantes y estables a largo plazo: aproximadamente 33 +/- 3 millones de años y 260 +/- 25 millones de años.
- Estos ciclos coinciden estrechamente con los períodos y fases del registro de cráteres de impacto de la Tierra.
- Los hallazgos sugieren una fuerte correlación entre los impactos periódicos de cometas y el tectonismo global y la evolución biológica.
Conclusiones:
- Los impactos periódicos de cometas son un factor significativo que influye en la historia geológica y biológica de la Tierra.
- Los ciclos observados de 33 y 260 millones de años pueden originarse de las interacciones del sistema solar con las nubes interestelares durante su órbita galáctica.
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