Geological rhythms and cometary impacts

Details Geological rhythms and cometary impacts Geological rhythms and cometary impacts

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8432327r&link_type=abstract

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Mathematics

Logic

Comets, Cratering, Earth (Planet), Periodic Variations, Tectonics, Geology, Statistical Analysis, Time Series Analysis

Scientific paper

Time series analysis reveals two dominant, long-term periodicities approximately equal to 32 and 260 million years in the known series of geological and biological upheavals during the Phanerozoic Eon. The cycles of these episodes agree in period and phase with the cycles of impact cratering on Earth, suggesting that periodic comet impacts strongly influence Earth processes.

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