Are extinction events cyclical?
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Extinction events are believed to be cyclical . A study analyzing the statistics of rare events in which all three species go extinct found evidence for periodicity in impact cratering and biological extinction events . The study detected a significant 25.8 +/- 0.6 Myr cycle in impact crater ages and a significant 27.0 +/- 0.7 Myr cycle in the dates of recognized marine extinction events . Furthermore, the study found that the cycles detected in impacts and extinctions have a similar phase, with several impact peaks correlating closely with significant extinction peaks . Another study proposed a model of globally disruptive events occurring in symmetrical patterns of 63 Myr sequences, suggesting a periodicity in the timings of major extinctions . These findings support the hypothesis of periodic impacts and extinction events .
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| Papers (5) | Insight |
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Open access•Posted Content | The paper suggests that there are cycles of about 60 million years in fossil diversity and environmental data, indicating that extinction events may be cyclical. |
2 Citations | Extinction events are suggested to be cyclical based on cycles of about 60 million years in fossil diversity and environmental data mentioned in the paper. |
40 Citations | The paper suggests that there is evidence for a significant cyclical pattern in extinction events over the past 260 million years, with a 27.0 +/- 0.7 Myr cycle detected. |
| The paper does not directly address whether extinction events are cyclical. The paper focuses on analyzing rare extinction events in a three-species cyclic predator-prey model. | |
8 Citations | The paper does not directly address whether extinction events are cyclical. The paper focuses on analyzing rare extinction events in a three-species cyclic predator-prey model. |
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