2006-10-16 02:03:20 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
One geological phenomenon that a reversal would affect would be the direction in which magnetic minerals line up as rocks are forming (like little compass needles pointing north). The best known example of this is the magnetic signature that forms when lava cools to basalt on the sea floor at a spreading ridge. That is why a map of the magnetism on the sea floor looks striped. Each time there has been a reversal, a new magnetic "stripe" forms at the ocean spreading ridge.
More susceptibility to solar storms.
There would be biological effects from reversals (think of problems with bird migrations) and human problems with reversals (think of navigation, etc.)
2006-10-16 03:50:20 · answer #1 · answered by luka d 5 · 1⤊ 1⤋
None. The magnetic field is far to weak to affect geology.
2006-10-16 03:18:39 · answer #2 · answered by Nomadd 7 · 2⤊ 0⤋