The Astronomical Pulse of Global Extinction Events | Zendy

David F. Lewis | Zendy; J.L.C.M. Dorne | Zendy

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The Astronomical Pulse of Global Extinction Events

Author(s) -

David F. Lewis,

J.L.C.M. Dorne

Publication year - 2006

Publication title -

the scientific world journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.453

H-Index - 93

eISSN - 2356-6140

pISSN - 1537-744X

DOI - 10.1100/tsw.2006.156

Subject(s) - extinction event , extinction (optical mineralogy) , milankovitch cycles , galaxy , physics , galactic plane , astronomy , astrophysics , geology , environmental science , paleontology , biological dispersal , population , demography , sociology , glacial period

The linkage between astronomical cycles and the periodicity of mass extinctions is reviewed and discussed. In particular, the apparent 26 million year cycle of global extinctions may be related to the motion of the solar system around the galaxy, especially perpendicular to the galactic plane. The potential relevance of Milankovitch cycles is also explored in the light of current evidence for the possible causes of extinction events over a geological timescale.

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