Class Notes (808,703)
Canada (493,376)

Lecture 26 - Cretaceous-Tertiary Mass Extinction

2 Pages
Unlock Document

Western University
Earth Sciences
Earth Sciences 1083F/G
Cameron Tsujita

Lecture 26The CretaceousTertiary Mass Extinction y Mass Extinctions of the Phanerozoic The Big Five o Ordovician Devonian Permian Triassic Cretaceous o Time when many types of organisms go extinct at the same geologic time o Correspond with boundaries of time periods o End Permian largest in history KT Mass Extinction y Late Mesozoic o Sea level rose and separated land areas o Lots of continental shelf area for shallow marine organisms y Early Cenozoic o Sea level dropped o Continents moved farther apart o Less shelf area for shallow marine organisms y But resulted in more connection between continents via land bridges y Less moderating effect on climate becomes more arid dry prairieslike conditions y Flood Basalt Volcanism o Result of great volcanic activity because of rising heat plumes from the mantle o Modern hot spots leftovers from plumes o Sul
More Less

Related notes for Earth Sciences 1083F/G

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.