Cretaceous — Tertiary mass extinction |
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| Authors: | P V Sukumaran |
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| Institution: | (1) Geological Survey of India, 575 003 Mangalore |
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| Abstract: | The bolide impact theory for mass extinctions at the Cretaceous-tertiary (K-T) boundary was a revolutionary concept. This
theory was contested by short duration global volcanism as a possible alternative cause for the K-T extinction. Though there
is a converging evidence for an extra-terrestrial impact coinciding with the terminal Cretaceous, the causative link between
the impact and the K-T mass extinction is debatable. Thus, while the impact theory is re-emerging, available evidence is still
insufficient to rule out either of the two hypotheses.
An erratum to this article is available at . |
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