COLLOQUIUM: Volcanism, Impacts and Mass Extinctions: Causes and Effects
The nature and causes of mass extinctions in the geological past have remained topics of intense scientific debate for the past three decades. Central to this debate is the question of whether one, or several large bolide impacts, the eruption of large igneous provinces (LIP) or a combination of the two were the primary mechanisms driving the environmental changes that are universally regarded as the proximate causes for four of the five major Phanerozoic extinction events.
Recent years have seen a revolution in our understanding of interplanetary environments, LIP eruptions and their environmental effects such that the simple impact-kill scenario no longer seems an adequate explanation for the Cretaceous-Tertiary boundary (KTB) or any other mass extinction. This presentation explores the twin catastrophes, the Chicxulub impact and Deccan volcanism that are closely associated with the KTB mass extinction.
The Princeton Plasma Physics Laboratory 2012-2013 Colloquium Committee is comprised of the following people. Please feel free to contact them by e-mail regarding any possible speakers or topics for future colloquia.