G103/203

Objectives Chapter 22

Mesozoic Earth

1)  How long did it take Pangaea to break apart and where was the first separation?

2)  What was the evidence for dryer climates in some parts of Mesozoic earth?

3)  In general what was the climate like during the Mesozoic?

4)  How many cratonic sequences were there during the Mesozoic and what was the cause of them?

5)  Know when the Sundance sea formed and what area the Cretaceous interior seaway covered.

6)  What is the Morrison formation, when did it form and why is it important?

7)  Know the relative order of each of the following orogenies that occurred during the Mesozoic, know what regions they affected, and know why they occurred (what were the mechanics)

Sonoma Orogeny                                 Sevier Orogeny

            Nevadan Orogeny Laramide Orogeny

8) When did terrane accreation occur in Western North America and what mountains were formed by this process during the Mesozoic?

9) What natural resources were deposited during the Mesozoic?

10) Be able to list two dominate marine invertebrates during the Mesozoic

11) How are the Saurischia and Ornithischia dinosaurs different from each other?

12) Of the two orders of dinosaurs, which are herbivores?

13) What is Archaeopteryx, what is it a possible ancestor of and which order of dinosaurs was it associated with?

14) What is a cynodont and what is it an ancestor for?

15) When were true mammals present on earth?

16) What is believed to be the combination of events that led to the mass extinction at the end of the Mesozoic?