Mathematics – Logic
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.315..659h&link_type=abstract
Nature, Volume 315, Issue 6021, pp. 659-662 (1985).
Mathematics
Logic
19
Scientific paper
The recent claim1 of an approximate 26-Myr periodicity in the pattern of mass species extinction over the past 250 Myr has already stimulated much astrophysical speculation and debate on causal mechanisms2-13. However, as shown here, the evidence for that claim is strongly contingent on arbitrary decisions concerning the absolute dating of stratigraphical boundaries14, the culling of the database and the definition of what is mass extinction as opposed to background extinction. This evidence becomes insufficient under other plausible geological timescales and other acceptable definitions of mass extinction. Analysis of the nonculled database shows that the reliability of identification of mass extinctions and their timing is at present extremely limited. It also suggests that the apparent periodicity of mass extinctions results from stochastic processes.
No associations
LandOfFree
Patterns of family extinction depend on definition and geological timescale does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Patterns of family extinction depend on definition and geological timescale, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Patterns of family extinction depend on definition and geological timescale will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1669259