Lab Exercise 17

Physical Geology Helpful Lab Hints

Exercise 17: Plate Tectonics

Problem 1

a. & b. The "anomalies" referred to are the strong and weak signals recorded by a magnetometer towed above the ocean floor. Examine the map and use the annotated version to help you locate the peaks.
- annotated map from p. 332
b. Label all of the peaks and connect the peaks with the same numbers.
c: Hint: they do. Now look for information in the text book in Chapters 2 and 13
d: rate = distance/time
- half rate: use the distance from the ridge to peak 4
- full rate: use the distance from peak 4 to peak 4'
- 10 km/million years = 1 cm/yr (divide km/Myr by 10 to get cm/yr)