| Title | Comment | Keywords |
|---|---|---|
| Magnetic Reversals | 14:36 - 15:43 (01:07) / 0.8 MB | "Scott Bogue", geologist, paleomagnetism, ocean, oceanographer, "lava flow", "Cambridge University", "Frederick Vine", "Drummand Matthews", intensity, "magnetic reversal", "sea floor", "magnetic field", polarity |