Geologic History of New York State (page 8 & 9 of ESRT)



Geologic History of New York State (page 8 & 9 of ESRT)

Search the ESRT for the answers.

1. What was the earliest eon, the Phanerozoic or the Precambrian? Precambrian

2. What is the most recent eon? Phanerozoic

3. The earliest Precambrian era is called early arcana

4. The latest Precambrian era is called late Proterozoic

5. The earliest era of the Phanerozoic is called Paleozoic

6. The most recent era of the Phanerozoic is called Cenozoic

7. Which eon lasted the longest amount of time? Approximately how long? Precambrian, 4BY

8. Which era lasted the shortest amount of time? Approximately how long? Cenozoic, 65.5 MY

9. When is the estimated time of origin of the solar system? 4.6 BY

10. When did the Mesozoic era begin? 251 MYA

11. When did the Mesozoic era end? 65.5 MYA

12. How long did the Mesozoic era last? 185.5 MY

13. In what era were the oldest microfossils found? Middle Archean

14. How long ago were the first stromatolite fossils found? about3.3 BYA

15. Rocks of what period would contain the earliest reptile fossils? Mississippian (Carbonif.)

16. During what period do the earliest insects appear? Silurian

17. How long ago did the earliest birds appear? About 150 MYA

18. How long ago do the earliest fish appear? About 515 MYA

19. Name 5 periods for which the rock record in NYS is complete. Cambrian, Ordovician, Silurian, Devonian, Quaternary

20. For what 3 periods does NYS have no rock record at all? Permian, Paleogene, Neogene

21. During what 2 periods were placoderm fish found in the fossil record? Late Silurian, Devonian

22. What kind of organism is a mucrospirifer? Brachiopod

23. What kind of organism is a tetragraptus? Graptolite

24. What 2 kind of fossils have been found in the rock record for the longest period of time? Gastropods, Brachiopods

25. What is the name of the NYS fossil? (Hint: look on the front page of your ESRT) Eurypterus

26. What geologic event was taking place in Northeast North America during the Jurassic Period? rifting

27. What caused the Taconian Orogeny (mountain building) occur? Closing of the Iapetus Ocean

28. During which period did the last continental ice advance and retreat? quaternary

29. How long ago was the initial opening of the Atlantic Ocean? About 175 MYA

30. During which period was the sand and shale under Long Island deposited? cretaceous

31. How long ago were N. America, S. America and Africa all connected? between 416 and 160 MYA

32. What was the latitude of Florida during the Triassic Period? 0 – on the equator

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