(Magnetic inclination vs. latitude graph).
Two igneous rocks crystallized at different times at the same geographic location on a continent. One rock crystallized at 120 Ma and records a magnetic inclination of 68 degrees; the second rock crystallized at 65 Ma and records a magnetic inclination of 50 degrees.
Which of the following best describes the motion of this continent between the time interval from 120 Ma to 65 Ma?
Assume the rocks remained in the northern hemisphere throughout their history.
A. It moved northward by about 28 degrees latitude.
B. It moved southward by about 28 degrees latitude.
C. It moved northward by about 20 degrees latitude.
D. It moved southward by about 20 degrees latitude.
E. It moved northward by about 58 degrees latitude.
F. It moved southward by about 58 degrees latitude.
I have been stuck on this problem for three days and my TA’s have not helped. Any help?
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