Publication Abstracts
Rampino and Caldeira 2015
, and K. Caldeira, 2015: Periodic impact cratering and extinction events over the last 260 million years. Mon. Not. Roy. Astron. Soc., 454, no. 4, 3480-3484, doi:10.1093/mnras/stv2088.
The claims of periodicity in impact cratering and biological extinction events are controversial. A newly revised record of dated impact craters has been analyzed for periodicity, and compared with the record of extinctions over the past 260 Myr. A digital circular spectral analysis of 37 crater ages (ranging in age from 15 to 254 Myr ago) yielded evidence for a significant 25.8±0.6 Myr cycle. Using the same method, we found a significant 27.0±0.7 Myr cycle in the dates of the eight recognized marine extinction events over the same period. The cycles detected in impacts and extinctions have a similar phase. The impact crater dataset shows 11 apparent peaks in the last 260 Myr, at least 5 of which correlate closely with significant extinction peaks. These results suggest that the hypothesis of periodic impacts and extinction events is still viable.
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BibTeX Citation
@article{ra04800g, author={Rampino, M. R. and Caldeira, K.}, title={Periodic impact cratering and extinction events over the last 260 million years}, year={2015}, journal={Monthly Notices of the Royal Astronomical Society}, volume={454}, number={4}, pages={3480--3484}, doi={10.1093/mnras/stv2088}, }
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RIS Citation
TY - JOUR ID - ra04800g AU - Rampino, M. R. AU - Caldeira, K. PY - 2015 TI - Periodic impact cratering and extinction events over the last 260 million years JA - Mon. Not. Roy. Astron. Soc. JO - Monthly Notices of the Royal Astronomical Society VL - 454 IS - 4 SP - 3480 EP - 3484 DO - 10.1093/mnras/stv2088 ER -
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