Which of the following statements about the Brunhes Magnetic Polarity Epoch is true?
• A. The Brunhes Magnetic Polarity Epoch is the most recent (youngest) magnetic polarity epoch. • B. The Brunhes Magnetic Polarity Epoch extends from ~700,000 years ago to the present. • C. The polarity of the Earth’s magnetic field was reversed during the Brunhes Magnetic Polarity Epoch. • D. both A. & B. E. all of these. • Relatively long (~1 my) intervals of magnetic polarity are called ________________________________. • Relatively short (~100 ky) intervals of magnetic polarity are called ______________________________. • The Matuyama Magnetic Polarity EPOCH lasted at least ___________________________________ years. • Give the name of a magnetic polarity EPOCH – ____________________________________________________. 6 • J. Tuzo Wilson is generally credited with proposing the concept of Seafloor Spreading. • Magnetic anomaly stripes observed parallel to Mid-Ocean Ridge crests are the result of varying amounts of magnetite mineral grains in the basalt comprising the seafloor. • Magnet
