The average polarity interval between magnetic reversals over the last 15 million years has been
A) 20,000 years.
B) 200,000 years.
C) 2,000,000 years.
D) 2,000 years.

Question

Quizplus · Accepted Answer

The average polarity interval between magnetic reversals over the last 15 million years has been approximately 200,000 years. This is based on the geological record of magnetic reversals found in rocks from that time period.

The Average Polarity Interval Between Magnetic Reversals Over the Last