Slide 1How do we determine geologic age? 1.Uniformitarianism = the processes that shape Earth have not changed. Slide 2 Relative Age 2. Law of Superposition = rocks at bottom…
Slide 1 Ancestral polyploidy in seed plants and angiosperms. Jiao et al Nature 473, 97–100 (05 May 2011) Slide 2 Millions of years ago P-Tr Apparent extinction intensity,…
Slide 1 Class 9 : The K-T impact (the Alvarez theory) Geological anomalies at K-T boundary. The K-T crater. Timeline for devastation. Slide 2 I : Geological anomalies at…