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Page 1: Magnetic Anomalies and Mid-Ocean Ridges

Magnetic Anomalies and Mid-Ocean Ridges

Tyler Szwarc, Haiyan Fu

Page 2: Magnetic Anomalies and Mid-Ocean Ridges

Magnetic Fields Induced in Igneous Rock

Page 3: Magnetic Anomalies and Mid-Ocean Ridges

Page 4: Magnetic Anomalies and Mid-Ocean Ridges

Dating the Seafloor• Radiometric isotopes in zircon, apatite, and

feldspars record crystallization age of seafloor basalts

• Ages range from 0 Ma at the spreading ridge to 185 Ma at the edge

Page 5: Magnetic Anomalies and Mid-Ocean Ridges

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