GEOL 11042 Lecture Notes - Lecture 23: Extinction Event, Supercontinent, Mesozoic

• School: Kent State University
• Department: Geology
• Course: GEOL 11042
• Professor: Neil A Wells

Document Summary

The extinction event that marked the boundary between the paleozoic and the. Mesozoic eras (the end of the permian period and the beginning of the triassic period) was the biggest extinction event in earth"s history. Although there is some variability in the way species extinctions are totaled, the general agreement among paleontologists is that the permo-triassic extinction event caused about 90% of marine taxa and about. Processes that can be global, too: something that could affect the atmosphere: temperature, composition, something that could affect the ocean: temperature, circulation, something that could affect both atmosphere and ocean. Event that could affect both atmosphere and ocean . We need to consider the effect of a big flood basalt called the siberian traps (trap is from the swedish word for step-the lava flowed out in layer upon layer, like steps). During permian-early triassic time, siberia was almost where it is today-but much of it was a big coal swamp.