Lab Exercise 17

Physical Geology Helpful Lab Hints

Exercise 17: Plate Tectonics

Problem 4.a.

web site: http://www.ngdc.noaa.gov/mgg/image/images/WorldCrustalAge.jpg
you may also refer to the map in the textbook on page 85.
(1) The key to the colors is at the bottom of the image (map). Use the colors to locate the oldest crust.
(2) The geologic time scale may be found on page 252 of your lab book
(3) In order to be more specific than the lab book refer back to Problem 1. Where does new ocean crust form?
(4) Again, refer to Problem 1 and to textbook Chapters 3 and 4.
(5) The map of plate boundaries may be found in your textbook in Chapter 4 (page 80). What is happening to the ocean crust on the west side of South America? (refer to textbook Chapter 11, discussion on Andean-Type Mountain building; also refer to Problem 2)
(6) No Hints, the lab book instructions are hint enough. (Oh, all right, the answer may also be found somewhere in textbook chapter 4.)