a. Forming of Pangea
b. Breakup of Pangea
c. Breakup of Rodinia
d. Gondwana collided into Antarctica
e. Avolonia collided with North America
e. Both a. and b.
a. the Atlantic rift begin to extend northward
b. opening of oceanic tracts between Africa and Antarctica
c. separation of North America from Gondwana
d. separation of Laurentia and Baltica
e. None of the above
5. The southeast United States is composed of rocks originally from _________.
c. Australia/New Zealand
a. the Atlantic rift northward
b. oceanic tracts between Africa and Antarctica
c. North America from Gondwana
d. Laurentia and Baltica
8. The fourth stage of the breakup of Pangea involved the separation of ______________.
10. What is the name of the Late Triassic sediments that filled fault control basins along the North American east coast?
a. Newark Super Group
b. Ripley Formation
c. Franciscan Formation
d. Shinarump Conglomerate
e. Carmel Formation
11. What is the dominant lava composition associated with the breakup of Pangea?
12. Starting in the Late Triassic, the Gulf of Mexico was a site of ____________?
a. orogenic event
c. stream deposits
d. lake deposits
e. thick evaporate accumulations
13. The Louann Salt produce salt domes because _______________.
a. salt flow plastically in the direction of high pressure
b. salt flow plastically in the direction of low pressure
c. salt flow non plastically in the direction of low pressure
d. salt flow non plastically in the direction of high pressure
14. The eastern United States began subsiding during the Cretaceous Period. The resulting sediment wedge ___________________.
b. thins towards the seaward
c. thickened seaward
d. that is uniform in thickness
e. None of the above
15. Cretaceous reefs were dominated by which of the following?
16. The late Cretaceous seas produce large volumes of chalk which is made out of _______________.
a. the sea floor spreading rate in the Atlantic ocean
b. the sea floor spreading rate in the Panthalassa ocean
c. the rate of the mountain building
d. isostatic rebound
19. What is the term for when a plate fragment rides up and over another plate?
20. Accretionary tectonics involves the formation of continents by the addition of ______________.
e. exotic terranes
21. Which of the following is not a Mesozoic Cordillera orogenic event?
22. Triassic rocks of the Cordillera started out marine and ended as continental with a __________________ separating them.
e. exotic terranes
23. The Chinle Formation was deposited by _____________.
a. streams and lakes
c. ocean currents
a. an exotic terrane
b. a mélange
d. rudistid reefs
26. During the Mesozoic Era the Cordillera subduction zones produced vast quantities of magma which lead to the formation of ____________________.
a. multiple overlapping thrust blocks
b. shield volcanoes
c. tensional faulting
d. subduction zones
a. Canadian shield
b. Southern States
c. Rocky Mountain States
d. Northeastern States
29. The paleo depositional environment for the Navajo Sandstone is _____________.
a. glacial ice
c. coastal dunes
d. desert dunes
e. the Grand Canyon
30. Regression of the Sundance Sea was followed by the dinosaur rich deposits of the ________________________.
a. Chinle Formation
b. Sundance Formation
c. Navajo Sandstone
d. Morrison Formation
e. Shinarump Conglomerate
31. Epicontinental seas of the __________________ period were the most extensive of the Mesozoic.
32. During the Cretaceous period extensive accumulations of sediments were deposition in the Cordillera region in _____________________.
a. rift basins
b. foreland basins
c. back-arc basins
d. foreign basins
e. exotic basins
a. Dakota Group
b. Newark Group
c. Morrison Formation
d. Niobrara Formation
e. Deccan Traps
34. Rocks that compose the Alpine-Himalayan mountain belt were derived from sediments deposited in the _________________.
a. Tethys Sea
b. Gulf of Mexico
c. South Atlantic Ocean
d. Pacific Ocean
e. Sundance Sea
a. Australia moving northward into New Zealand
b. Africa moving northward into Europe
c. Europe moving eastward into North America
d. Asia moving southward into Antarctica
a. A broad seaway
b. A nearly circular seaway
c. The shape of the modern Pacific ocean
d. The shape of the modern South Atlantic
e. The shape of the modern Red Sea
a. mammal-like vertebrate
b. fish-like vertebrate
a. North America
d. Australia/New Zealand
a. Vast reef structures
b. Immense sedimentary wedge
d. Large quantities of low-viscosity basaltic lava
e. A long narrow sea way
2. e 12. e 22. c 32. c
3. c 13. b 23. a 33. a
4. b 14. c 24. b 34. a
5. d 15. d 25. b 35. b
6. b 16. e 26. a 36. e
7. a 17. a 27. a 37. c
8. d 18. e 28. c 38. a
9. a 19. a 29. b 39. e
10. a 20. e 30. d 40. d