Paleomagnetic dating: Relies on
A. Chemical reactions between iron-bearing rocks and acidic groundwater
B. the periodic reversal of the Earths magnetic poles
C. Dating unstable ion isotopes
D. the use of hand magnets to draw sediments out of the ground.
Answer is B. the periodic reversal of the Earths magnetic poles (changes in direction and intensity of Earth's magnetic field, which affects orientation of magnetically charged particles when fossilizing.)
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